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Second Pass

Getting correct interfaces out of AI tools — for designers working through a model, and for everyone else now shipping UI without one.

Fifty-two units in seven parts, one idea each: a symptom, two versions of the same screen, a short explanation, a prompt, a rule. The contents sit on the left and stay with you while you read.

3 of 52 units published · Chapter 2 writing now · Updated 10 Sep 2026

The model fills gaps with the average.

Ask for a dashboard and it invents plausible numbers; ask for a landing page and it invents plausible content. Everything here is about closing those gaps on purpose.

Invoices · same brief, twice
An invoices panel: the outstanding total does not match the rows below it

Generated. Outstanding reads 84,200 and the badge says twelve invoices, but three rows are listed and they add up to 28,400. “Paid this month” and “Avg days to pay” came from nowhere at all.

The same invoices panel, where the total is the sum of the rows and every state is derived

Derived. Outstanding is the sum of the rows — 22,200 — and the count matches them. The two figures nothing supports are empty, not invented, and status comes from the due date.

Nothing on the right was drawn better — it was specified.Aggregates that reconcile · planned ↗
Part 1 · Chapter 1 · Published · updated 12 Aug 2026

Learn to see the shape without the substance

A generated screen gets the shape right — header, hero, three cards, table, quote. Your eye reads that as competence and stops looking. Go block by block instead and ask what each one claims, and where the claim came from. Ninety seconds to read, two minutes to apply.

The rule

Read a generated screen block by block and name the source of every claim before judging how it looks.

Read the whole unit ↗
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The prompts and rules are meant to be pasted verbatim; translating them would break them. The rest of the site is bilingual.
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Planned units are marked in the contents and still readable — they carry the claim and the rule. Chapters publish whole.
Using this with a team
Share the lessons freely, internally or publicly. Running a session for your team? Ask me.