Commissioned for this museum

Not in the Provided Material

English·2023·21 lines·580 bytes

Curator’s note

A prompt whose main work is describing, in advance, the acceptable way to fail.

Left alone, a system asked a question it cannot answer will produce something anyway, because producing something is what it does. The plausible-sounding answer is not a malfunction; it is the default, and the only reliable cure is to supply a different default and make it easy to reach.

Hence the exact wording. Not in the provided material. is given as a literal string rather than a description of one, because a caller has to be able to recognise it — and a sentence the caller can test for is a value, where "say you do not know" is a hope. This is the same reason the museum's own build fails loudly with a fixed message rather than warning vaguely.

The sentence doing the real work is "a complete and successful response". Without it the instruction is a prohibition, and a prohibition leaves the task unfinished; with it, refusing *is* the task, and there is nothing left to reach for. Naming the cost — a wrong answer costs more here than no answer — gives that instruction a reason rather than only an authority.

The last line handles the case people forget. Sources that disagree are common and quietly become a choice made silently. Asking for both, with the disagreement stated, turns a guess back into evidence.