One idea, many Exps.

Each is narrow on purpose. An Exp carries the data, the vocabulary and the judgement its own domain actually requires — depth in one place, rather than a thin layer over everything.

Exp — our word for one of these. Not an app you click through, but an instrument built from first principles around a single domain of human judgement. From exponent: the thing that multiplies. Said “ex-pee”, or “exponent” in full.