LLenny's Podcast
← All resources
software

Instagram

By Meta

10 recommend/use · 45 sourced episodes

Every sourced reference

Short attributed excerpts only. Timestamps are approximate.

Related frameworks

Marketing4 steps

Adjacent User Theory

Find growth by understanding and dogfooding the product as the next user just outside your current base.

Read →
Marketing4 steps

Ad Strength Hole-in-the-Ship Diagnostic

Use Google's brand vs non-brand ad-strength report to find the one fix that lifts the whole account

Read →
Strategy5 steps

Advise Like an Investor: The Company Selection Filter

Your advisory portfolio is an investment portfolio — pick for the liquidity event, not the logo

Read →
Leadership5 steps

Advocate Yourself Out of a Job

Argue for the company-optimal allocation of your team even when it defunds you — and read the response.

Read →
Strategy5 steps

AI Answer Box Keyword Triage

Segment your keywords by intent, quarantine the informational ones, and start teaching the AI

Read →
Self-Mastery4 steps

AI as Your Learning Engine

Stop only asking AI to do work for you — spend your spare hours making it train you

Read →
Influence3 steps

Anchor High, Never Split the Difference

Find the ceiling; a reflexive split leaves six figures on the table

Read →
Marketing5 steps

April Dunford's Five-Step Positioning Framework

Position a product by starting from what you must beat, not from a market category.

Read →
Innovation5 steps

Artificial Density Testing

Manually cram enough users into one cluster to get a clean yes/no on a social product

Read →
Marketing4 steps

Assessing Whether SEO Is Right for Your Product

Judge SEO fit by two signals — a large addressable market and existing domain authority.

Read →
Self-Mastery3 steps

A Stable of Mentors

Keep three or four mentors on a rotating monthly schedule so you always have someone to talk to.

Read →
Productivity3 steps

Bad vs Sad Quality Tiers

Classify every failure as bad (irrecoverable) or sad (recoverable pain) so teams triage quality across many surfaces.

Read →
Finance3 steps

Belsky's Founder Bet Checklist

Back mission-driven, pragmatically pessimistic founders building products with a clear object model.

Read →
Influence4 steps

Be Someone's Favorite, Not Everyone's Okay

Aim to be a small group's absolute favorite rather than a large group's forgettable option — and measure it.

Read →
Leadership3 steps

Best-Idea-Wins Culture: Speak Up, Then Commit

Engineer a culture where the junior person's idea can win — then walk the chosen path decisively.

Read →
Productivity5 steps

Best-Model-First Agent Workflow

Use the most capable model on max effort, start in plan mode, then auto-accept — counterintuitively cheaper.

Read →
Leadership3 steps

Bloom's Taxonomy as a Coaching Diagnostic

Pinpoint where a struggling PM or manager breaks down along the ladder of critical thinking, then fill that gap.

Read →
Influence4 steps

Build Champions Before the Offer

The negotiation starts sooner than you think — plant reciprocity and recruit coaches across the org

Read →
Strategy4 steps

Build for Day 365 Retention

The most valuable companies have the highest one-year retention — engineer for it using early social signals

Read →
Entrepreneurship4 steps

Build for the Model Six Months Out

Design your AI product for the model that ships in six months, not the one you have today.

Read →
Entrepreneurship3 steps

Build in Private (Best Work Is Done Alone and Quietly)

Skip the public-building playbook and pour your limited time into customers and product instead.

Read →
Productivity4 steps

Build It Wrong Before You Know It's Right

Use AI to test a hundred ideas a day as a failure machine, not to polish one idea for three months

Read →
Strategy4 steps

Build Only at the Magic Intersection

Don't ship what anyone could build off the shelf — build only where model and product uniquely meet.

Read →
Leadership4 steps

Capacity-Red Headcount Justification

Add headcount only when a days-committed-vs-days-in-quarter calculator stays red after cutting low-value work

Read →
Innovation5 steps

Championing Big Bets Inside a Company

To win support for audacious product bets, repeat the vision relentlessly, state your intent, and optimize for impact.

Read →
Marketing4 steps

Channel Diversification Before the Drought

A one-channel growth company is always a no-no — turn on the second channel while the first still works.

Read →
Communication3 steps

Clarity Over Cleverness

Lean into understood standards instead of reinventing them, and you get leverage for free

Read →
Marketing5 steps

Close the Loop: Intent-Signal Retention Engine

Turn every low-commitment user signal into a trigger you can legitimately fire later.

Read →
Communication6 steps

Communication Is The Job

Impact happens only through artifacts and words — so map the mental model before you speak.

Read →
Innovation4 steps

Complaint Storms

A team ritual to see your own product with fresh, critical eyes — by first ripping apart someone else's.

Read →
Innovation4 steps

Complementary Format Integration

Bring a proven new format into a mature product so it expands, not contorts, the core

Read →
Communication5 steps

Concentric Circles Message Propagation

Spread any message outward from your own desk, one audience ring at a time — never skip a circle.

Read →
Strategy4 steps

Conditional-Layer Validation

Reduce a consumer product to ~4 things that must be true and validate them one at a time

Read →
Communication4 steps

Control the Channel, Pace, and Field

Never negotiate over email; slow it down and pick the room where you win

Read →
Entrepreneurship3 steps

Conviction-Gated Team Scaling

Start tiny to earn conviction, then staff up enough to actually ship the best version

Read →
Leadership4 steps

Conviction Staffing

Staff speculative projects with people obsessed with the idea, not with whoever happens to be free.

Read →
Marketing4 steps

Copy Comps' Zero-to-One, Not Their Growth Hacking

Ignore late-stage growth tactics with no users — study what your archetype did to get its first 1,000

Read →
Communication5 steps

Cross-Subgraph Resonance Testing (Metaphor Forging)

Test framings live across unconnected audiences; the ones that land in distant subgraphs will travel.

Read →
Communication5 steps

Cultural Erogenous Zones

Stop trying to change what people care about; bridge from what they already care about to you.

Read →
Productivity3 steps

Cut Scope, Not Quality

When time is short, strip features down to the core instead of shipping the same feature badly

Read →
Leadership5 steps

Deal Speed and Default Optimism

Codify the values you already have, not the ones you wish you had.

Read →
Innovation4 steps

Decompose-and-Ensemble

Break a broad problem into specific tasks, then solve each with a specialized model in an ensemble.

Read →
Entrepreneurship4 steps

Defensible Moats for AI Startups

Four durable places to build in AI where foundation-model labs are least likely to squash you.

Read →
Communication3 steps

Deflect the Number Question

Never name your figure first; make them reveal the range instead

Read →
Innovation5 steps

De-Risk the Biggest Swings First

Run discovery and delivery in parallel — and put the top-right, riskiest bets into discovery first.

Read →
Innovation5 steps

Designing a Zero-to-One Incubator Inside a Giant

Fix the incentive system and the time horizon first — everything else about internal incubation follows.

Read →
Productivity5 steps

Design Your Day (Calendar as Canvas + Groundhog Day Iteration)

Draw the day you want on the calendar, run it, see what actually happened, adjust, repeat

Read →
Strategy4 steps

Determinate vs Indeterminate Optimism (Betting Under Deep Uncertainty)

Founders need one specific plan; allocators need many bets and a discount on their own forecasts

Read →
Strategy3 steps

Distribution-First Moat

Solve distribution before you obsess over product-market fit; it is the harder, more durable edge.

Read →
Innovation3 steps

Documentation vs Storytelling Safety Framework

Sort every AI-video use case into documenting reality (block) or storytelling (enable)

Read →
Productivity3 steps

Do Half, Then Go on a Killing Spree

Build half the features, then remove things until the one core action runs at 10x velocity.

Read →
Innovation4 steps

Don't Box the Model In

Give the model tools and a goal, not a rigid workflow — scaffolding gains get wiped out by the next model.

Read →
Strategy5 steps

Don't Compete With What You Bought

The classic acquisition killer: building a rival in-house version of the thing you just acquired.

Read →
Productivity4 steps

Draft-First LLM Augmentation

Never ask the model to do your job — write your version first, then have it improve it.

Read →
Innovation4 steps

Earn the Secret by Savoring Surprises

There's no recipe for a breakthrough — hunt surprises at the edge instead of validation

Read →
Strategy3 steps

Eigenquestions (Finding the Question That Drives the Answer)

Find the one or two questions whose answers collapse a complex decision into clear quadrants.

Read →
Innovation4 steps

Empathize-Then-Invent (The Stories Method)

Listen deeply to users for hours, then build something new — never the literal feature they asked for.

Read →
Innovation4 steps

Eval-Driven Product Development

Design the test for your AI product alongside the product, then hill-climb the model against it.

Read →
Strategy5 steps

Excitement-Signal Persona Discovery

Ship a broad tool, then let the segment with the most emotive joy tell you who to focus on

Read →
Strategy5 steps

Execution Beats Strategy

Perfect strategy with poor execution teaches you nothing. Good-enough strategy with perfect execution compounds.

Read →
Influence5 steps

Expand, Don't Shrink

Insert a step between receiving feedback and acting on it — then answer it by adding tools, never by getting smaller.

Read →
Finance4 steps

Expand the Pie with Performance Triggers

Break the salary band by making it 'we' and tying pay to outcomes

Read →
Strategy3 steps

Exponential Bet Allocation

If AI is your core value, shift the growth portfolio from micro-optimizations to large bets

Read →
Innovation4 steps

Fake the AI Before You Build It

Never train a model for an MVP — prototype the AI's output and test demand first.

Read →
Mindset4 steps

Fear Gives Bad Advice (The Prediction Bet)

When gripped by fear, do the opposite of your gut — and use a bet to prove it to yourself

Read →
Mindset4 steps

Fear-to-Agency Reframe

When AI change triggers fear, lean in and ask what's within your control — turn it happening to you into happening for you.

Read →
Communication6 steps

Feeling-First Product Metaphor

Pick the feeling, name where you last felt it, and let the metaphor make a thousand small decisions for you.

Read →
Strategy4 steps

Find the Cocktail Party

To reinvent social, find where the cocktail party wants to happen and make it rowdy and socially productive

Read →
Innovation5 steps

First-Principles Re-Derivation (Rerun the Decision Tree)

Rebuild any product decision from today's building blocks instead of copying path-dependent solutions.

Read →
Productivity5 steps

First-Step Onboarding (Lower Barriers, Raise Delight)

Beat the blank page by walking users through tiny surprising steps until they surprise themselves

Read →
Strategy4 steps

Force a Choice, Not a Comparison

Be the world's first banana, not a 10x better apple

Read →
Marketing5 steps

Freemium Decision Framework (What to Make Free)

Make a feature free if it drives your growth model; gate it if it creates friction for growth.

Read →
Strategy5 steps

Fundamentally Different, Not Incrementally Better

Only a fundamentally different experience gets customers to tell their friends about it.

Read →
Strategy5 steps

Gardening Over Building (Farming for Miracles)

Plant many cheap compounding seeds instead of manufacturing outcomes with brute effort.

Read →
Leadership5 steps

Giving Away Your Legos

To let yourself and the company scale, hand off the work you're best at and find joy in enabling others

Read →
Strategy4 steps

Growth Team as a Rigor Forcing Function

Hire a growth leader early — the second-order effect is that it exposes everything you haven't measured.

Read →
Influence4 steps

Guild Nights

Six interesting people, one topic, at your house, catered — the highest-ROI network you can build

Read →
Strategy4 steps

Happy GMV and Minimum Viable Happiness

Track only the GMV that produced a retained customer, and boil the thimble until it clears the bar

Read →
Leadership4 steps

High Agency, High Accountability

Pair the freedom to solve problems your own way with clear ownership of the hypothesis and the outcome.

Read →
Productivity5 steps

Hunting New Bottlenecks When AI Writes the Code

When AI removes the coding bottleneck, constraints shift up and downstream — go find them.

Read →
Innovation5 steps

Hypothesis-First Customer Discovery

Bring a crisp hypothesis to the interview — then be its judge, not its lawyer.

Read →
Self-Mastery5 steps

Identity Threat to Curiosity

Your worst behaviour comes from identity threat — turn the clench into 'fascinating, tell me more'.

Read →
Leadership4 steps

Impact = Environment × Skills

Audit your career by scoring the environment variables and skill variables that gate your impact.

Read →
Marketing4 steps

Incrementality via Conversion Lift & Geo Tests

Prove paid actually caused growth by withholding ads from a control group and measuring the lift

Read →
Innovation3 steps

Information-Diet Idea Divergence

Same inputs produce same ideas — mine your unique experience and starve the herd feed

Read →
Innovation5 steps

Innovate Inside a Big Company as a Separate C-Corp

Spin new products into their own C-Corp with a founder-type lead reporting to the CEO, bypassing core-code review

Read →
Strategy4 steps

Instrument-and-Improve S-Curve Prioritization

Let retention curves and diminishing returns tell you when to optimize and when to bet on something new

Read →
Leadership4 steps

Internal Virality for Alignment

Get a big org aligned by making a prototype go viral inside the company instead of grinding stakeholder meetings

Read →
Marketing4 steps

Inverted Time-to-Value

Engineer the aha moment into the first 3 seconds using non-obvious platform mechanics

Read →
Innovation4 steps

Jobs-to-Be-Done Agent Mapping

Bring order to AI chaos by listing every stakeholder's jobs-to-be-done, then mapping agents onto them.

Read →
Marketing3 steps

Jobs-to-Be-Done Interrogation (The Big Hire)

Interrogate the moment someone first hired your product to find the real cause of usage

Read →
Strategy4 steps

Just-in-Time Planning

Shrink long roadmaps to a lightweight monthly priority list and grant explicit permission to kill dead processes.

Read →
Mindset4 steps

Kill Hope Before Hope Kills You

Separate belief from hope, and refuse to launch until you're collecting winnings instead of making bets

Read →
Leadership5 steps

KPI + Narrative: The Two-Part Turnaround Drumbeat

Pair one north-star KPI with one relentlessly repeated narrative to reset how a company works.

Read →
Self-Mastery6 steps

Laser Mode: Engineering Speed Bumps Against Distraction

Willpower never wins. Move the candy further away than the sandwich.

Read →
Innovation4 steps

Latent Demand Detection

Find product ideas where people already fight through a distorted process to get a value

Read →
Innovation4 steps

Latent Demand Mining

Watch for people jumping through hoops to make your product do something, then make that the smooth path.

Read →
Strategy4 steps

Latent Demand Product Discovery

Find your next product by watching people misuse your current one for something it wasn't designed to do.

Read →
Leadership4 steps

Leader Dogfooding for Product Pulse

Live and breathe your product as a real user (or meet customers) and trust the anecdote over the dashboard.

Read →
Mindset5 steps

Leader Emulators

Build runnable models of the sharpest people you've worked with, then boot the right one when you're stuck.

Read →
Self-Mastery5 steps

Lean Into Your Spike

In the AI era, double down on your unfair advantage and stack disciplines to become a unicorn

Read →
Leadership5 steps

Leverage Your Leaders

Stop proving you can do it alone — make it cheap for your manager to unblock you.

Read →
Leadership6 steps

Little Hands Growth Hiring

Hire on the KPI they'll commit to and their willingness to do the tiniest job.

Read →
Entrepreneurship4 steps

Live in the Future and Notice What's Missing

Don't try to think of a startup idea — get out of the present so ideas find you

Read →
Productivity5 steps

LNO Framework

Match your effort to each task's leverage, neutrality, or overhead

Read →
Marketing5 steps

Long-Tail Paid Diversification

After the big four ad platforms, buy the dozens of small ones nobody bothers to set up.

Read →
Innovation4 steps

Lower the Courage Required

The scarcest resource is courage, not genius — so design products and decisions to need less of it.

Read →
Leadership4 steps

Make Everyone a CEO

Give people a real hill to take with operating control so they do the right thing when you're not in the room

Read →
Communication4 steps

Make the Other Mistake (Prompting for Brutal Feedback)

To get honest AI critique, over-correct toward brutal — the model won't actually overshoot.

Read →
Productivity5 steps

Make Time: Highlight, Laser, Energize, Reflect

A daily four-step loop that changes your defaults instead of making you faster at the wrong things

Read →
Leadership3 steps

Manager-as-IC Onboarding

New managers ship as individual contributors first — and keep doing it — before and while they manage people.

Read →
Leadership4 steps

Manager Visibility via an Always-On Agent

Enlist a standing AI session across all repos and channels to stay on top of 8x throughput and drive conversations.

Read →
Leadership4 steps

Managing Complex Change

Diagnose why a team is stuck by finding which of five change ingredients is missing.

Read →
Marketing3 steps

Manufacture the Story You Belong In

When you're too boring to cover directly, create the news, trend, or data others must cover — and live inside it.

Read →
Innovation4 steps

Markets as Currents, Not Bodies of Water

Chase the change dynamic pulling the market, not the size of the market

Read →
Strategy4 steps

Measurements Are Not Insights (Instrumentation for Analytics)

Turn raw metrics into segmented, causal insights you actually act on.

Read →
Leadership3 steps

Merchandise Progress Through the Messy Middle

Short-circuit the human reward system with agreed micro-goals and a narrated sense of progress.

Read →
Strategy4 steps

Mistakes of Commission Over Omission

Doing nothing is the riskiest comms strategy — it hands the win to the status quo by default.

Read →
Communication4 steps

Mochary's Script for Difficult Conversations

Defuse the amygdala by warning first, delivering the message, then letting the person release emotion.

Read →
Strategy3 steps

Model Maximalism

Build at the edge of what models can barely do — the next model will make it sing.

Read →
Leadership4 steps

No Bystanders on Product Strategy

Get the CFO, the head of people and sales fingerprinted on product strategy before growth goes negative.

Read →
Strategy4 steps

Onboarding as a Retention Lever

Treat onboarding as a habit-and-retention engine, not a conversion funnel — and accept lower conversion to weed out the wrong users.

Read →
Innovation3 steps

Opinionated Defaults for Onboarding

Encode what you've learned works into product defaults — make the right choice easy and the wrong choice hard, without removing choice.

Read →
Self-Mastery4 steps

Optimize for Learning: The Impedance-Match Career Test

Choose roles by where you'll learn most and whether the mission truly matches how humans are wired.

Read →
Strategy3 steps

Optimize for the Problems You Want to Have

Only build features that stop people from reaching the point where they'd ask you for more.

Read →
Leadership5 steps

Organizational Kayfabe

Diagnose the shared fiction everyone knows is false — then route around it without detonating it.

Read →
Strategy4 steps

Output-Toward-Outcome Measurement

Don't forsake motion for progress — keep asking whether the metric you climb still serves the outcome.

Read →
Marketing5 steps

Paid Channel Sequencing Ladder

The order to adopt paid platforms: user-driven search first, disruptive media next, expensive targeting last

Read →
Leadership2 steps

Painter, Architect, Surgeon Hiring Archetypes

Match your growth hire to your stage — a versatile painter, a structural architect, or a precision surgeon.

Read →
Innovation4 steps

Pattern-Breaking Inside a Big Company

Make small bets that can fail a lot — and hide them from the mother ship

Read →
Marketing5 steps

Payback-First Channel Measurement

Judge channels on closed-won revenue one year out, never on lead volume.

Read →
Marketing3 steps

Pitch the Freelancer, Not the Editor

The hungriest, most reachable writer at an outlet is usually the freelancer — target them, not the busy staff editor.

Read →
Self-Mastery5 steps

Play Yourself Like a Fiddle (Activation Energy + Always-Rules)

Beat activation energy with tight time boxes and an escalating task ladder; hold habits with always-rules.

Read →
Strategy4 steps

PMF for Candidates (People, Mission, Financials)

Evaluate a company you might join like an investor evaluates a deal — across People, Mission, and Financials.

Read →
Productivity2 steps

Poor Man's Fine-Tuning (Few-Shot + Role Priming)

Steer a model with in-prompt examples and a role identity instead of a full fine-tune.

Read →
Leadership3 steps

Portfolio Hiring: Range Over Style

Hire designers on portfolio alone; wide range proves a designer, a signature style reveals an artist.

Read →
Strategy4 steps

Positional vs. Tactical Game

Don't die, then pour your energy into board position — tactics are the drawdown of value you've already earned.

Read →
Strategy4 steps

Positive-Sum Dials (Levers You Don't Pull)

Build every monetization lever you can, then refuse to pull them — coordinate on the iterated game instead of defecting for short-term profit.

Read →
Entrepreneurship3 steps

Pre-Sell Before You Build

Do customer validation and line up buyers before writing code or raising money

Read →
Marketing3 steps

Press as a Trophy, Not a Megaphone

The value of coverage is often the 'as seen in' validation you deploy yourself — not the readership.

Read →
Marketing6 steps

Pressure = Force ÷ Surface Area

Same effort, narrower target, more impact — shrink your surface area to raise message pressure.

Read →
Innovation3 steps

Principles for Building Trustworthy AI Products

Match UI confidence to data quality, be transparent about sources, and design virtuous data cycles.

Read →
Communication3 steps

Problem-Solving Story Over Success Story

Editors reject polished wins — lead with the challenge you faced and how you got through it.

Read →
Marketing5 steps

Product-Led SEO (Jobs-to-be-Done, End-to-End)

Map real user jobs to search queries and follow the experience all the way to the magic moment

Read →
Innovation4 steps

Proven Better New

Master the proven, add a verifiable better, gamble one risky new — to stack the odds a product wins

Read →
Leadership4 steps

PSHE Career Growth Framework

Evaluate talent by how far up the Problem-Solution-How-Execution ladder they operate.

Read →
Self-Mastery5 steps

Putting On the Coat of the Job

Run the spreadsheet, then tear it up — and simulate a Tuesday in the job instead.

Read →
Marketing3 steps

Query Fan-Out Content Strategy (AEO/GEO)

Win AI answers by understanding that a machine, not a person, is doing the searching behind every response

Read →
Marketing5 steps

Question-First Cheap Channel Playbook

Find where your buyers ask their questions, answer them honestly, and let the answer sell.

Read →
Mindset5 steps

Reading Your Own Critics

Read every criticism carefully, believe none of it blindly — you know more than the critics do.

Read →
Self-Mastery3 steps

Read Old Books You Know Nothing About

With ~50–100 books left in a lifetime, spend them on time-filtered classics in domains you're ignorant of.

Read →
Innovation3 steps

Reason About It Like a Human

To design or debug AI behavior, ask what an equivalent human would do in the same situation.

Read →
Strategy5 steps

Re-establishing Product-Market Fit (Stacking S-Curves)

When growth plateaus, throw away the roadmap, sacrifice impact for learning, and rebuild PMF for the next audience.

Read →
Mindset4 steps

Reflect: The Daily Experiment Loop

Treat each day as an experiment you ran, not a gravestone of success or failure

Read →
Mindset3 steps

Remove the Emotional Filter From Decisions

Strip emotion out to get the raw decision, then handle feelings separately afterward.

Read →
Communication5 steps

Reset Expectations + Slow Your Inbox

Announce a slower response cadence with a 'because', then actually slow the hamster wheel

Read →
Marketing3 steps

Reverse-Engineer the Publication's Mission

Editors serve their audience, not you — decode who each outlet serves, then fit your story to that mission.

Read →
Leadership6 steps

Sacred Cows as Your Roadmap

In a calcified org, the list of things nobody is allowed to touch IS the product roadmap.

Read →
Communication3 steps

Schedule Syncing (Managing Your Manager)

Never say no to your boss — show your timeboxed calendar and ask them to help you prioritize.

Read →
Entrepreneurship4 steps

Sell-Ready From Day One

Acquisitions rarely just happen — seed acquirer relationships early, then run the sale like a fundraise.

Read →
Leadership3 steps

Separate the Decision from the Implementation

Decide for the stakeholder as if there were no feelings, then solve each hurt in implementation

Read →
Leadership5 steps

Ship-Fast Operating Model

Lightweight bottoms-up planning, PM-light teams, and iterative deployment in a fast-moving domain.

Read →
Marketing4 steps

Signals and Nudges for Choice Under Abundance

When every result is plausible, confidence beats relevance — surface glanceable signals, not more inventory.

Read →
Marketing3 steps

Signal vs Noise Metric Selection

Let the campaign's single goal decide which metric is signal — everything else is noise

Read →
Strategy5 steps

Skeleton Before the Makeup

Sequence early growth investment from site fundamentals up to awareness — never the reverse.

Read →
Leadership4 steps

Skill Stack-Rank Interview

Have senior candidates rank themselves against the exact skills the role needs to reveal fit and self-awareness.

Read →
Leadership4 steps

Slime Mold Org Design (Sports Car vs Big Rig)

Coordination cost grows with the square of headcount — drive the vehicle you actually have.

Read →
Strategy3 steps

Software Is Not a Moat

Any feature you ship can be cloned; build ecosystems, platforms, and hardware that can't be copied.

Read →
Productivity4 steps

Spec-as-What-Good-Looks-Like Verification

Check your definition of good into the repo so AI code review can automatically validate work against it.

Read →
Strategy4 steps

Stamina as the Kill Signal

Projects die of exhausted stamina long before they die of exhausted money — so watch the team, not the runway.

Read →
Entrepreneurship3 steps

Start Embarrassingly Small

The more ambitious you are, the humbler your starting point should be — begin at 1,000 feet, not 100,000

Read →
Innovation5 steps

Stated vs Revealed Preferences: Holding Conviction Through User Outrage

When users scream and keep refreshing, believe the behaviour — then debug details, not vision.

Read →
Leadership4 steps

Stay Close to the Metal

The best product CEOs micromanage the pixel-level details and are the first and last mile of the product

Read →
Innovation3 steps

Steering AI to a Non-Obvious Strategy

AI gives predictable strategy when asked lazily — enumerate every input first, then make it argue back

Read →
Marketing4 steps

Strategic Friction

Add friction that helps a user understand why the product is for them; cut friction that doesn't

Read →
Strategy4 steps

Strategic Technical Debt as Leverage

Startups should take on technical debt on purpose — it's how you outrun bigger companies

Read →
Innovation6 steps

Strategy Salons (Nerd Clubs)

Seed a small, opt-in, yes-and idea group that spins off strategy insights as a side effect.

Read →
Self-Mastery5 steps

Stretch With an Anchor

Take the role that will hurt you into growth — but only if one or two things in it are already in your wheelhouse.

Read →
Leadership4 steps

Superpower Naming (Be More, Not Different)

Name someone's superpower early, then frame every nudge as 'be more' rather than 'be different'.

Read →
Strategy5 steps

Supply-First Marketplace Building

Marketplaces aren't chicken-and-egg — they're two-sided, and you always start with supply.

Read →
Strategy4 steps

Systems-First Scaling (One to 100)

Once you have product-market fit, go slow to go fast: build the systems before you hyperscale.

Read →
Innovation2 steps

Tar Pit Idea Detection

Spot the seductive ideas that draw everyone in and trap them — they validate but never work

Read →
Strategy4 steps

Task Loss, Not Job Loss

Your job won't vanish — analyze it as a bundle of tasks and keep swapping the tasks AI absorbs

Read →
Leadership4 steps

Teaching Hospital and Tech Assistant

Transfer your product instincts by working in the open and cloning a shadow who becomes a mini-you

Read →
Self-Mastery3 steps

The 10-Minute Rule (Surfing the Urge)

Beat any urge to get distracted by waiting ten minutes and riding the emotion until it subsides.

Read →
Leadership4 steps

The 10-to-1 Input/Output Kill Test

When you pour 10 units of effort in for 1 unit of output, the project has run its course.

Read →
Leadership6 steps

The 10 Traits of Great Product Managers

A definition of what the PM job actually is — facilitation, execution, and impact — not a career ladder.

Read →
Leadership4 steps

The 70/30 Cover Fire Allocation

Spend 70% earning the right to exist so the other 30% can plant seeds nobody will kill.

Read →
Innovation5 steps

The Acqui-Hire Silo

Buy a founder, hand them the riskiest bet, and spend your capital shielding them from the org.

Read →
Strategy5 steps

The Adjacent Possible + Low-Resolution North Star

Take only safe next steps — but always the one with the steepest gradient toward a 3-5 year North Star.

Read →
Influence4 steps

The Adjacent-Precedent De-Risk Pitch

Win leadership buy-in for a big AI bet by anchoring it to a past bet that already worked.

Read →
Marketing3 steps

The Age-Invitation Curve

Target the age band still adding social connections, or plan to buy every user with ads

Read →
Self-Mastery5 steps

The AI PM Upskilling Path

Learn the fundamentals, shadow a research scientist an hour a week, and build one model end to end.

Read →
Innovation4 steps

The AI Startup Moat: Data Flywheel + Crafted Workflow

Defensibility for AI apps comes from a proprietary data flywheel and a deeply crafted vertical workflow.

Read →
Leadership5 steps

The Ambiguity Navigation Rubric

Score behavioural answers on three axes: did they impose structure, seek inputs, and define milestones?

Read →
Strategy5 steps

The Asynchronous Scaffolding Test

A synchronous-only consumer product can't retain. Surround it with async, or pick a vertical.

Read →
Innovation5 steps

The Automatable Growth Loop (CACHE)

Break growth experimentation into four evaluable stages an AI can hill-climb, keeping humans on alignment

Read →
Mindset4 steps

The Barbell Media Diet

Read only the up-to-the-minute and the timeless — distrust everything in the middle

Read →
Productivity5 steps

The Bits and Bobs Idea Distillation Loop

Capture everything, filter weekly by resonance, distil, publish — a compounding personal insight engine.

Read →
Self-Mastery7 steps

The Bootloader: Structured Morning Self-Reflection

Boot the day with exercise, then run an hour of red-yellow-green review across every role in your life

Read →
Sales3 steps

The Calendar Customer-Contact Audit

20-30% of your calendar should say 'customer meeting' — in person, not behind a keyboard

Read →
Marketing4 steps

The Cheap-Ad Funnel Diagnostic

Use a small paid ad to isolate whether your packaging or your content is the problem, via click-through vs subscribe.

Read →
Marketing4 steps

The Clip-Distribution Flywheel

Podcasts have no built-in discovery engine — borrow one by seeding high-quality clips on TikTok, YouTube, and Reels.

Read →
Leadership5 steps

The Coaching Model (Coaches, Not Managers)

Replace managers with same-specialty coaches whose only job is your skills and your next level

Read →
Strategy6 steps

The Coherent Strategy Specificity Test

A strategy is not an aspiration — it names a specific customer, pain, solution and advantage in one sentence.

Read →
Sales3 steps

The Collison Install (Last-Mile Close)

A 'yes' isn't a sale — hand-hold implementation until the customer is fully live

Read →
Communication5 steps

The Comms Equation (Goal → People → Action → Belief → Medium)

Back-solve every comms plan from a business goal, never from an impressions target.

Read →
Communication5 steps

The Compelled Test (Storytelling as Product Signal)

After they describe a big problem, measure your own reaction — do you feel compelled to go work on it?

Read →
Self-Mastery3 steps

The Complementary-Axis PM Skill Development Framework

Level up (or transition into) PM by picking the skill axis opposite your background, then strategy

Read →
Self-Mastery6 steps

The Constrained Self-Awareness Probe

Remove the humble answer, borrow someone else's eyes, or jump three years forward — self-awareness can't hide.

Read →
Influence5 steps

The Consultative Interview Flip (Sell the Vacation)

Run the interview like an enterprise sale so there is no competition when the offer comes

Read →
Sales4 steps

The Conversion-Funnel Cold Email

Treat a cold email like a growth funnel: open, then read, then reply — optimize each stage separately

Read →
Entrepreneurship3 steps

The Conviction Test for Whether to Quit

Compare your conviction now versus at the start to decide whether to persevere or pivot.

Read →
Marketing4 steps

The Creator Growth Triad

Consistency, collaboration, and curator association — the three levers that have made creators since 2010.

Read →
Leadership3 steps

The Curator Leader (Not the Visionary)

The best product leaders don't own the ideas — they build environments where great ideas bubble up and get chosen

Read →
Productivity5 steps

The Daily Highlight

Pick the one thing you want to name as today's highlight, size it to 60-90 minutes, write it down

Read →
Entrepreneurship4 steps

The Delight-First MVP Test

Don't launch until the product sparks joy in your first users, because they are your only growth channel

Read →
Marketing4 steps

The Dinner-Table Topic Test

Find your podcast's niche by noticing what makes people lean in at dinner — then force the decision with a deadline.

Read →
Leadership6 steps

The Dinosaur Brain Product Review

Executives hold three facts. Bring a recommendation, not a catalogue — and leave with principles, not answers.

Read →
Strategy4 steps

The Diversified Roadmap Portfolio

Treat a product roadmap like an investment portfolio, balanced across three axes of risk and intent.

Read →
Entrepreneurship3 steps

The Don't-Die Keep-Going / Give-Up Decision

Deciding whether to persist or shut down by testing love, energy, and remaining moves

Read →
Productivity3 steps

The Effort Metric (Measure Attention, Not Completion)

Track 'did I do what I said for as long as I said without distraction' instead of whether you finished.

Read →
Peak Performance5 steps

The Energy Audit (Zone of Genius)

Color every hour of two weeks green or red, then eliminate the reds until your calendar is 80% green

Read →
Leadership5 steps

The Eye of Sauron: Calibrating Leader Depth

Go pixel-deep only on what hinges success — and tell people exactly where their space begins.

Read →
Communication5 steps

The Fascinating Reframe

Convert the visceral urge to be right into a question that harvests the information you're missing.

Read →
Communication4 steps

The Fast-Feedback Flywheel

Fix every piece of user feedback within minutes so people feel heard and give you even more.

Read →
Innovation3 steps

The First Mile: Lazy, Vain, and Selfish

Design onboarding for the first 30 seconds, when every new user is lazy, vain, and selfish.

Read →
Leadership4 steps

The First Performance Review Reference Call

Ask a cherry-picked referee what feedback you'll give the candidate at their first review — they can't dodge it.

Read →
Innovation5 steps

The Five-Day Design Sprint

Go from zero to a tested prototype in five days — decide with customer reactions, not hunches

Read →
Leadership5 steps

The Five-Legged Stool

Product, eng, design, insights, and marketing as one leadership team — with the PM accountable, not king.

Read →
Leadership6 steps

The Five PM Archetypes

Hire and compose product teams by five distinct thinking styles, not one generic ideal PM.

Read →
Strategy5 steps

The Forge and the Dam

Two career positions compound: the company's hottest fire, or the critical thing nobody watches.

Read →
Entrepreneurship3 steps

The Foundation Reset Heuristic

If the market stops sharpening your path, the problem is the foundation — not the effort.

Read →
Leadership4 steps

The Four Challenges of AI Product Management

Uncertainty, pivots, data scarcity and a broken promo path — the four taxes of the AI PM role.

Read →
Leadership4 steps

The Four Things a Product Manager Brings to the Team

Prepare to contribute by mastering users, data, the business, and the competitive landscape.

Read →
Strategy5 steps

The Framework Limit Test

Two tripwires that tell you your product framework (JTBD, OKRs, DAU) has become the enemy.

Read →
Finance5 steps

The Front-Loaded Advisor Equity Structure

Equity only, a three-month cliff, vesting front-loaded to the value, and an exit built in

Read →
Communication5 steps

The Going Direct Playbook

Build one owned channel, voiced by a real human, primed before you ever need it.

Read →
Strategy3 steps

The 'Going Home' Pivot

A good pivot moves warmer — toward your existing expertise and what your last idea taught you

Read →
Entrepreneurship5 steps

The Growth Advisor Sourcing and Vetting Gauntlet

Wait for PMF, source through VCs and channel-leading companies, and borrow a trusted expert to vet

Read →
Leadership4 steps

The Growth Competency Model

Four competency buckets for hiring, evaluating, and balancing a growth team without chasing a unicorn.

Read →
Leadership6 steps

The Hardest Thing Test (Calibrating Difficulty and Agency)

Ask what's the hardest thing they've ever done, then extract their difficulty bar and how much agency they had.

Read →
Entrepreneurship3 steps

The Hated-Incumbent Idea Prompt

Find a big incumbent customers hate with terrible software, then build the replacement

Read →
Strategy5 steps

The Hierarchy of Engagement

Three stacked levels — core action, accruing benefits, self-perpetuation — that decide if a consumer product endures

Read →
Entrepreneurship5 steps

The Hierarchy of Marketplaces

Focus, tip, dominate — the only sequence that produces a marketplace worth owning

Read →
Strategy5 steps

The Hill Climb

Name whether you're optimising a local hill or crossing the valley to a bigger mountain — then price the valley.

Read →
Leadership4 steps

The Hogwash Question (Breaking the Interview Mindset)

Ask what conventional wisdom is inaccurate — it's unanswerable without genuine opinion, so it exposes authenticity.

Read →
Communication3 steps

The Human Customized Pitch Email

A short, human, story-first email that proves it was written for this one person — not a mass blast.

Read →
Leadership4 steps

The Humane Firing Process

Warn, deliver, let them release emotions, then become their active agent to their next job

Read →
Leadership5 steps

The Humane Mass Layoff Playbook

Cut deep once, in dollars not headcount, delivered 1:1 — then heal the stay-team by making them feel heard

Read →
Strategy2 steps

The Ideas-Left Pivot Timing Test

Pivot when you're out of credible growth ideas, not just because growth is slow

Read →
Self-Mastery4 steps

The Indistractable Model

The four-step system for controlling your attention: master triggers, make time, hack back, and pre-commit.

Read →
Leadership3 steps

The Indistractable Workplace (Three Traits)

Distraction is a symptom of dysfunction — fix it with psychological safety, a forum, and leaders who model it.

Read →
Innovation4 steps

The Inflection Stress Test

Four questions that separate a real inflection from a vague 'why now'

Read →
Mindset4 steps

The Introspection Probe (Decoupling Decisions from Outcomes)

Ask for a win that worked for the wrong reason, or a good call that failed — outcome-blind introspection tests.

Read →
Communication3 steps

The 'I Perceive You To Be In Anger' Feedback Formula

Interrupt someone's anger without triggering more of it by using a judgment-free I-statement

Read →
Marketing5 steps

The 'Is The Search Over?' Content Standard

Judge every article by one question: after reading it, does the reader go back to Google?

Read →
Marketing4 steps

The Launch Momentum Playbook

Podcast charts reward subscriber velocity, not downloads — stockpile episodes, spike the launch, then bank the rank.

Read →
Leadership3 steps

The Loonshots Two-Structure Organization

Run a big rigorous org and a tiny flat innovation team side by side; the leader's job is the bridge.

Read →
Strategy4 steps

The Marketplace Priority Stack

Pre-commit an explicit ranking of who you serve first, so thorny trade-offs resolve themselves.

Read →
Strategy4 steps

The Model Launch Bar

With probabilistic products, the PM — not the scientist — decides what accuracy is good enough to ship.

Read →
Strategy4 steps

The Negative-Growth Rehearsal

Growth masks all problems — so ask what you'd do if growth went negative, before it does.

Read →
Innovation3 steps

The Object Model: Three Questions Every Screen Must Answer

On every screen, a user should know how they got here, what to do now, and what to do next.

Read →
Marketing4 steps

The Ops Cadence Spreadsheet

A rocks-and-pebbles spreadsheet that assigns every account task a defined weekly/biweekly/monthly rhythm

Read →
Leadership5 steps

The Owner-Not-Renter Veto

How a PM says 'not yet' to an executive chain that desperately wants to scale.

Read →
Leadership3 steps

The Painful-Mistake Growth-Mindset Interview

Screen only for growth mindset by asking for the most painful mistake and what changed because of it.

Read →
Innovation4 steps

The Pilot Program for De-Risking Launches

Build a diverse champion network of real customers to test new features in the wild before you ever launch.

Read →
Leadership3 steps

The Pod + Product Staff Team Model

Replace the 13-person specialist team with a 6-person generalist pod plus one summoned specialist

Read →
Strategy3 steps

The Press-as-Fundraising Filter

Only pursue press when you can name a specific business job it will do — same discipline as raising money.

Read →
Leadership5 steps

The Proudest Work Question (Taste Triangulation)

Ask what work they're proudest of and why — it exposes taste, standards, motivation, and where their gravity pulls.

Read →
Strategy5 steps

The Provenance Gate: Scaling Supply Without Diluting the Brand

Let sellers scale by outsourcing production — but only to a partner whose process they actually know.

Read →
Strategy4 steps

The Public and Secret Roadmap

Split your roadmap into what users ask for and what only you can see — the wins come from the second

Read →
Communication6 steps

The Repeatable Idea Test (Put the Pill in the Cheese)

Engineer a message people repeat for their own reasons — memorable, effortless, and never an inside joke.

Read →
Communication3 steps

The Say-Do-Said Loop

Say you'll do the thing, say you're doing it, say you did it — to align, adjust, and close the loop.

Read →
Productivity5 steps

The Scheduled AI Chief of Staff

Put proactive agents on a schedule to watch your metrics, surface misalignment, and coach you weekly

Read →
Innovation6 steps

The Sean Ellis Scale Gate

Never scale a product until a calibrated share of users would be 'very disappointed' without it.

Read →
Marketing4 steps

The SEO Staffing Stack Rank and Impact Clock

Internal expert, then a relentless doer surrounded by advisors, then agencies — and 3 to 12 months to prove it

Read →
Strategy4 steps

The Shiny Object Trap (Problem-First AI)

A regular PM ships the right product; an AI PM solves the right problem.

Read →
Entrepreneurship4 steps

The Should-You-Start Reality Test

Before launching a podcast, prove to yourself you'd do it for free forever — then commit to a finite season.

Read →
Marketing4 steps

The Signs of Life Test

Spend a tiny budget on a new platform to detect a positive signal before committing to a full campaign

Read →
Leadership3 steps

The Six-Month Autonomy Razor

If you're still telling a hire what to do six months in, you hired the wrong person.

Read →
Peak Performance5 steps

The Six-Month Passion Test

Don't trust your identity about what you'll love — give the unfamiliar job six months, then judge.

Read →
Communication3 steps

The Soft Pushback

The one-line, zero-aggression ask that recovers ~20% of comp almost every time

Read →
Self-Mastery4 steps

The Superpowered Individual (Combination-of-Skills Career Moat)

Go deep in one craft, then use AI to add adjacent crafts until you become un-replaceable

Read →
Self-Mastery4 steps

The Talent Stack (Intersection of Uniqueness)

Stack three-to-five things you're uniquely good at and curious about so you know more than everyone else in that tiny space.

Read →
Leadership6 steps

The Teleportation Device Test (Finding the Important Question)

Cap a candidate to two questions on a fictional problem to reveal whether they can find the decision-driving question.

Read →
Innovation3 steps

The Three B's of Behavior Change

Change user behavior by picking a specific Behavior, removing Barriers, and adding immediate Benefits.

Read →
Leadership7 steps

The Three-Chapter Hiring Playbook: Find, Assess, Close

Hire the top 1% by hunting signs of excellence, then closing with the whole exec team and the family

Read →
Entrepreneurship4 steps

The Three Elements of a Breakthrough Idea

Grade any startup idea on inflections, insight, and founder-future fit — not the implementation

Read →
Leadership3 steps

The Three-Hire Performance Team Sequence

Build a paid team in order: data-driven generalist, then creative, then a dedicated data scientist

Read →
Communication4 steps

The Three Levels of Making Someone Feel Heard

Escalate from acknowledging, to reflecting words, to voicing the unspoken thoughts behind them

Read →
Mindset3 steps

The Three Mindset Shifts That Stall or Restart PM Growth

Fix the three stories — control, change, and self-image — that quietly stall product careers

Read →
Self-Mastery3 steps

The Three Pacts (Pre-Commitment Firewall)

Lock in your intentions ahead of time with an effort pact, a price pact, or an identity pact.

Read →
Innovation4 steps

The Three-Part AI Product Utility Equation

A useful AI product needs model intelligence, context/memory, and application/UI to all converge.

Read →
Leadership3 steps

The Three Pattern-Breaking Actions

Movements, storytelling, and disagreeableness — how you get people to move to your future

Read →
Innovation4 steps

The Three-Pillar AI Integration Model

Build where you have data advantage, partner for commodities, and open an app ecosystem for the rest

Read →
Communication3 steps

The Three-Slide Believer Pitch

What you do, your non-obvious insight, then proof — built for believers, not objectors

Read →
Communication3 steps

The Three Tenets of PM Stakeholder Collaboration

A mantra for working with stakeholders: surface issues, not yourself; drive decisions, don't hoard them

Read →
Leadership3 steps

The Three-Trait Hire Plus Two AI-Era Premiums

Grit, quick-learning, self-awareness get you hired anywhere — curiosity and putting yourself out there keep you relevant

Read →
Leadership3 steps

The Three Ws of PM Career Growth

Rise faster by performing on all three axes: what you produce, what you bring, and how you operate

Read →
Strategy5 steps

The Tippability Test

Check supply fragmentation, supply heterogeneity and incumbent competition before you fund a marketplace

Read →
Leadership4 steps

The Toby Tornado (Compressed Change Management)

When you sense a project is wrong, compress the conflict into a short window, kill it, and reconstitute the team as founders of the next version.

Read →
Marketing5 steps

The Traffic Light Keyword System

Rank every keyword by buying intent, not volume — then work greens down before touching yellows.

Read →
Strategy5 steps

The Transaction Tiebreaker for Marketplace Prioritization

Stop arguing supply vs demand — make the transaction itself the thing every team is accountable to.

Read →
Marketing3 steps

The True Competition Metric

Use auction-insights math to tell a genuine competitive threat from a harmless close-variant accident

Read →
Strategy4 steps

The Trusted-Advisor Partner Test

Shared audience is not enough — partner only where your buyer already goes for this specific advice.

Read →
Strategy4 steps

The Two-Bucket Controversial-Test Triage

Sort every risky experiment into a red-line 'never run' bucket or a 'run it if the return justifies the cringe' bucket

Read →
Marketing5 steps

The Two-Bucket SEO Fit Test

Does your product mint pages by itself? The answer decides your entire SEO strategy

Read →
Leadership5 steps

The Two-Week Deputization Rule

Under two engineering weeks, the engineer is the PM; over two weeks, the PM owns it

Read →
Leadership3 steps

The U-Curve of Founder Involvement

Involve a product-minded founder heavily at the start and end of a project, but give the team space to run in the middle.

Read →
Productivity4 steps

The Weekly Focus Ritual

Post what you're focused on this week, and whether last week's focus actually landed.

Read →
Innovation5 steps

The Weekly Marketable Feature

Every engineer ships one feature per week that a user would pay or show up just for

Read →
Productivity4 steps

The YOLO Rule: When Not to Run an Experiment

Experiments have a cost — sometimes shipping 40 things fast beats testing 10 things properly

Read →
Innovation4 steps

Three Ways to Find Marketplace Whitespace

Unbundle a low-NPS segment, own an ignored niche, or change the atomic unit of supply

Read →
Productivity4 steps

Timeboxing Your Values (Make Time for Traction)

Replace the to-do list with a weekly timeboxed calendar built from your values across three life domains.

Read →
Marketing5 steps

Tipping Loops: Growth Loops and Happiness Loops

Two symbiotic loop types — one grows the marketplace, one keeps it happy as it grows

Read →
Leadership6 steps

Toddler Soccer Goal Detangling

Goal every team on the same output metric and they swarm the ball. Detangle the customer journey into lanes.

Read →
Finance3 steps

Token Budgets as a Trust-Proportional Resource

Kill the token-spend leaderboard; cap AI spend like any resource, sized to trust in someone's ROI judgment

Read →
Productivity4 steps

Top-Down / Bottoms-Up Core Action Analysis

Cross two analyses — return-propensity ranking and product purpose — to find the one action worth optimising

Read →
Productivity3 steps

Top Goal with an Accountability Partner

Protect a daily block for your own priority and have a human physically present to force you to do it

Read →
Entrepreneurship6 steps

Treat Your Course Like a Product

Hypothesise the audience, interview them, iterate the ICP, and run three weeks — not one.

Read →
Leadership4 steps

Under-Resource to Force Automation

Deliberately under-staff projects and hand out unlimited tokens so people are forced to automate with AI.

Read →
Mindset3 steps

Understand It to Dissolve the Fear

Fear of a new technology is misunderstanding — spend time with it and you'll see its edges.

Read →
Productivity4 steps

Understand Work (Understand → Identify → Execute)

Budget intentional time to understand a problem first, so your team ships fewer things with a far higher win rate.

Read →
Leadership4 steps

Unquantifiable-First Decision-Making

Demote metrics to a support function and let taste, fun, and delight drive — because Goodhart's law means any metric-as-goal degrades.

Read →
Leadership3 steps

Values Reverse-Engineered from Why You Win

Don't philosophize your company values — extract them from the reasons you're actually succeeding.

Read →
Entrepreneurship3 steps

Vertical AI Opportunity Finder

Build where the winning data is locked behind a company or industry's walls — foundation models won't go there.

Read →
Communication5 steps

Viral Hoax Counter-Attack

When a hoax threatens your app, treat it as a growth problem and out-viral it on every vector

Read →
Strategy3 steps

Vision-Strategy-Execution Split (and the Controversy Test)

Vision is the destination, strategy is an opinionated path — and a real strategy must be disagreeable

Read →
Innovation5 steps

Volume-of-Ideas Design Velocity

Great ideas come from many ideas; build a high-velocity, no-gate, ego-free making-and-critique culture.

Read →
Communication3 steps

When-It-Leaks Communications Pre-Mortem

At scale you can't test quietly — decide the message before you even know you want to launch

Read →
Mindset3 steps

Your First Company Is a Zero (Build the Founder Muscle)

Treat your first three founding years as a craft apprenticeship, not a success you owe yourself.

Read →

People in these episodes

Related resources

Spot an error or want this page removed? Request a correction or removal.