Research

Research notes

What we measure while building the platform, how we measure it, and what we change as a result. Each note states whether its test has been run, and results are added to the note when they come in.

MethodProposed17 October 2026
When a persona fact helps and when it hurts
A fact belongs in a synthetic persona only if the model reacts to it in the same direction as real people, and by less than twice as much. This note derives that rule and sets out the test we will run on every field in our backstories.
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