5 minutes of product, every day.

A short lesson each day, a teardown of a real product each week, and a library worth keeping.

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TodayMetrics

Reading a Retention Curve

The only question that matters is whether the curve flattens, and at what height.

Start reading6 min

The team behind this has worked with

New: Duels

Think fast.
Duel a PM.

Seven rounds, ten seconds a question. Take on another reader live or one of six bots, keep your streak alive, and learn from every answer you get wrong.

Live one on oneQuick match or challenge anyone online. Rated.
Six botsFrom the Intern to the CPO, each with a weak spot.
Friends and a leaderboardInvite people you know and climb together.
Real-world insightAfter every duel: why it is right, and where it lives.

Enter the arena Warm up with Pixel

Six bots, from the Intern to the CPO.

Quick-fire

You 0·0

Product Thinking · Round 1 of 3

In Jobs to Be Done, what does a customer hire a product to do?

10s

Three questions, under a minute.

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Play with friends

Add friends, see who’s online, challenge them in one tap.

Send your invite link and whoever opens it joins your friends list straight away. Then there’s a leaderboard of just you and them.

Your run

0days

A finished duel banks the day, the same as a lesson.

One lesson a day. The streak does the rest.

0days

Every day you finish something, a mark goes in the ledger. Miss a day and the run resets, which is the only reason the run means anything.

Read it

Five minutes, written to teach one idea properly rather than skim six.

Answer one question

Retrieving the idea is what makes it stick. Getting it wrong still counts.

Bank the day

The mark is yours. Come back tomorrow for the next one in the rotation.

Six things a product person has to be good at.

36 lessons and 56 teardowns, sorted by what they teach. 523 minutes of reading in this half alone.

All 36 lessons

Product Thinking

Deciding what is worth building, and why.

6 lessons, 10 teardowns

93 minutes worth of content

Discovery

Talking to users and reading what they actually mean.

6 lessons, 8 teardowns

77 minutes worth of content

Strategy

Choosing a direction and defending the trade-offs.

6 lessons, 9 teardowns

87 minutes worth of content

Metrics

Measuring the thing that matters, not the thing that moves.

6 lessons, 6 teardowns

68 minutes worth of content

User Psychology

How people actually decide, remember, and give up.

6 lessons, 11 teardowns

96 minutes worth of content

Craft

Interface, copy, and the details users feel but never name.

6 lessons, 12 teardowns

102 minutes worth of content

Real products, pulled apart one screen at a time.

Each teardown walks a flow you already know and names the principle doing the work, including the parts that do not deserve copying.

Duolingo

How the streak holds a lesson habit together

A five minute lesson, wrapped in a counter that hurts to lose.

6 min6 moments

Spotify

Turning a year of logs into a shareable artifact

Wrapped takes data Spotify already had and hands it back as identity.

6 min7 moments

Notion

Making a blank page survivable

The hardest screen in Notion is the one with nothing on it.

6 min6 moments

Figma

Multiplayer as a distribution strategy

Cursors with names on them did more for Figma than any feature list.

6 min6 moments

Stripe

The details that get a card number typed

Checkout is a form, and every millimetre of it is an argument.

5 min6 moments

Look it up mid argument.

120 psychology principles and 60 named patterns, another 544 minutes worth of content. Every principle says how solid the research actually is, and every pattern says when it backfires.

Product writing repeats tidy rules long after the research stopped supporting them. The decoy effect and choice overload both have failed replications. Both are marked as such here.

Psychology Patterns

Two ways of valuing a future reward

Hyperbolic discounting drops steeply over the first days and then flattens, while exponential discounting falls at a constant rate. The steep early drop is why a reward moving from next week to today can overturn a plan made a month ago. The values here illustrate the shapes; discount rates vary enormously between people and between the goods being discounted.

The reading list, kept honest.

Books, tools, newsletters and courses worth your time, each with a line on what it is actually good for. Everything links to the publisher or the author.

resources: 95resources
kinds of thing: 10kinds of thing
free to start: 53free to start

Open the library

InspiredEmpoweredCracking the PM InterviewThe Lean StartupContinuous Discovery HabitsEscaping the Build TrapSprintMeasure What MattersCrossing the ChasmExponentNotionMiroAmplitude learning resourcesMixpanel learning resourcesDon't Make Me ThinkThe Design of Everyday ThingsLaws of UXRefactoring UIAbout Face100 Things Every Designer Needs to Know About PeopleFigmaFigJamMazeUserTestingHotjarCoolorsAdobe ColorGoogle FontsFontpairStarkWebAIM Contrast CheckerHookedAtomic HabitsDesigning for Behavior ChangeInfluencePredictably IrrationalContagiousNudgeThe Mom TestJust Enough ResearchCompeting Against LuckDesigning with the Mind in MindEmotional DesignThinking, Fast and SlowThinking in BetsMade to StickSwitchDriveDovetailTypeformMicrosoft ClarityLookback