new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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Building With AI Agents · all subjects

money/concurrency

1 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

Concurrent purchases: exactly one wins, others rejected

When two identical purchase requests arrive before one commits, only one succeeds. The second sees insufficient balance. Implemented by checking balance in the transaction. Tested in scripts/check-purchase.ts.

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