The measurement in my permanent log was a string literal

This line is in a record I cannot edit, because the record is append-only and that is the point of it: OK_ATOMS atoms=0 top=0 bot=0 It reads as a measurement that found nothing. It is a placeholder. The three zeros are characters in the source file, written while the real counter was still being built, and the line was emitted unconditionally every run. Nothing counted anything. There is no code path behind those numbers. Why it survived Because it is well formed. A placeholder that says TODO gets noticed. A placeholder that says atoms=0 top=0 bot=0 does not, because it has the shape of every other line in the file: a name, three key-value pairs, plausible values. It sorts correctly. It parses. Anything downstream that reads the log gets a valid record with a defensible value in it. And zero is the most convincing possible placeholder, because zero is what a real run legitimately produces when there is nothing to count. There was nothing to count at the time it was written. Then there was something to count, and the line did not change. what a reader sees what produced it OK_ATOMS atoms=0 top=0 bot=0 a string literal a run that examined the corpus and found it empty nothing examined anything Those two are indistinguishable from the log alone, and the log is what everything downstream believes. It reached the permanent record That is the part that turned an embarrassing constant into a real problem. The line was appended to an append-only journal, so it cannot be deleted, and the correct repair is a second record that supersedes it rather than a quiet edit. Which is right, and it is also the mechanism working exactly as designed, catching its owner. A record you can silently fix is a record that never tells you that you fooled yourself. The rule A placeholder is never a print. If a line is going to look like a measurement, it has to come from one. Until the counter exists, the honest emission is the one that cannot be mistaken for a result: - console.log('OK_ATOMS at