“The first principle is that you must not fool yourself—and you are the easiest person to fool.”Richard P. Feynman · Cargo Cult Science · 1974 · Richard P. Feynman, «Cargo Cult Science», discursul de absolvire la Caltech, 1974, publicat în Engineering and Science, iunie 1974
What cannot be shown to a stranger did not happen, as far as the audit is concerned.
Feynman's 1974 line describes, without meaning to, why management systems ask for documented information. Not because paper has value in itself, but because one's own memory is the most indulgent auditor anyone has. A process everyone agrees simply works that way cannot be contradicted by anything; a written process can be compared with what actually happened. From this come the two halves of the discipline: write what you do and do what you write. The first alone produces a shelf of procedures nobody follows, and every deviation becomes a nonconformity. The second alone produces good practice that cannot be demonstrated or handed on. Objective evidence is an artefact with a date, an author and content someone else can verify: a log, an approval, a test result, an attendance list. What cannot be shown to a stranger did not happen, as far as the audit is concerned.
Memory does not lie out of malice; it quietly rewrites the past each time. A week later, yesterday's decision already seems wiser than it was. A written artifact stops this slow rewriting. It is not just evidence for the auditor; it is an anchor against your own brain. Think of a meeting where everyone leaves convinced of slightly different things. The note sent afterward becomes the only real version. Feynman warned that you fool yourself most easily; the dated record is your defense. But what happens when you record something you never actually did?
Passage 1 ended with a question; here is the answer: a false record is not just a lie on paper, it contaminates the whole chain. Every dated artifact becomes the starting point for later decisions. If a test log says something that never happened, next month's colleague builds on an invented foundation. Feynman saw this in laboratories: slightly adjusted results, made with good intentions, that led an entire community down the wrong path. The everyday example: you fill in today's car checklist from memory, because surely you checked it yesterday. Tomorrow, someone drives off trusting a check that never happened. An honest record is hard to write; a false one is easy to write and costs everyone else. But what, in practice, stops you from writing honestly, when nobody is checking at that moment?
Why it matters At audit, the difference between an observation and a nonconformity is often just the existence of an artefact with a date and an author.