◕ The Durability Curve The Instrument Room · Issue 76 · 133 releases tracked
AI is everywhere. The interesting stuff is underneath.
Find out which parts of your work keep their value as AI gets cheaper. Run the instruments on your own work, with no login. Read the essays that explain why, each one dated so you can check it.
72 essays, dated · 7 instruments · 700+ readers · Claim Ledger
Every release adds noise.
Underneath it, value follows a curve.
Output commoditises. Architecture compounds.
Run it on your own position
My advantage runs through
Awaiting a layer
—
Half-life of the advantage, before it has to be rebuilt
Watch for
Pick the layer your advantage actually runs through, then answer the one question that decides which side of it you are on.
Station I
Start Here
One short essay hands you the lens, then routes you by the problem you actually have.
IndexStation II
The Bench
Walkthroughs you can run this afternoon: gates and audits your agent cannot talk its way past.
Index
Station III
The Rack
Runnable instruments, no login. Each one reads only what you give it.
- 01 The Two-Rate Diagnostic Your AI edge against its layer’s clock. LIVE
- 02 The Multi-Agent Decision Whether a flat loop beats the fleet. LIVE
- 03 The Marathon Calculator What a finished job costs once retries are counted. LIVE
- 04 The Metric Validity Audit How your number lies, and what to do. LIVE
- 05 The Potemkin Map What your system only appears to do. LIVE
- 06 The Structure Spotter Whether your belief is a measurement artefact. LIVE
- 07 The Shape Test Whether your curve is really compounding. LIVE
Station IV
The Essays
The long arguments: where value moves as AI gets cheaper, each one dated so you can check it against what ships next.
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FLAGSHIP, STANDALONE 2026·09·21 You Own an Asset You've Never Scored The file your agent reads first is capital. Score it out of sixteen, fix the thinnest mark, and run the one check that tells you whether the spec, not the model, was your limit. -
THE BRIEF 2026·09·17 Show It an Example Why 'make it distinctive' gets you the least distinctive thing there is, and what to paste instead. -
THE BRIEF 2026·09·16 Ask for the Step Before the Answer Before you trust an AI answer you cannot check, ask for the step it was built from. -
FLAGSHIP, STANDALONE 2026·09·14 You Can Win the Wrong Game for Years You usually cannot tell whether you are playing the wrong game. Write down what would prove it, and by when. -
THE BLUEPRINT 2026·09·09 The Planes That Didn't Come Back Success stories and the antiques that outlasted the rest. Your evidence was filtered by what survived to reach you. -
PROOF & TRUST 2026·09·04 Your Verification Budget Is Backwards You can't check everything your agents produce, so you're already triaging. Most of us spend the effort where checking is easy, which is rarely where a mistake is expensive. -
THE BLUEPRINT 2026·09·02 The Extra Lane Fills Itself Wider roads, faster teams, more appointments. Add room to a queue that turned people away and demand rushes back. -
THE BLUEPRINT 2026·09·01 The Option You Were Never Meant to Buy The weak rival, the overpriced tier, the house shown first. The option you never choose can change what you pick.
Station V
The Chart
You have been looking at it the whole time. The field behind this page is the chart: the two curves the whole publication argues.
Interactive: trace any lab’s releases along the curve.
Station VI · The Log
Get the next dated read when your layer’s clock moves.
Several essays a week. The instruments need no address.
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All 7 instruments run in full with no login, and most essays are free to read.