what's the smallest piece of work that proved you knew what you were doing?

asking because the resume version of this is always inflated. but the real version is usually a 50-line script, a one-page memo, a saved chat with a customer, a screen share where someone watched you debug something live.

what was yours? the small piece of evidence that, if someone saw it, would tell them everything about what you can do.

i think we vastly underestimate how good these tiny artifacts are at telling the truth, which is the entire premise of TAM.