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His case rests on Michael Malis's pgrust, a Postgres rewrite that has already surfaced real Postgres bugs, including a money overflow bug.
The thread split on whether people are bored or just not enjoying it.
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Dan Luu describes a workflow where a support ticket becomes a PR automatically, and he'll ship without human review if the fuzzing coverage is deep enough. He borrows it from Centaur, a chip company that ran 1,000 test machines for 40 engineers and shipped under one serious bug a year, with no unit tests.
After 50 runs he also found the viral 'caveman mode' token trick gave no consistent edge.
The thread argues over whether property-based testing can really replace unit tests.
Dan Luu's 2020 essay maps the spikes that appear wherever a hard threshold sits: 9.8M marathon finishes clump at round times, Polish exams bunch at the pass mark, drug charges pile up exactly at the sentencing cutoff.
The thread adds fresh cases — chess ratings, AWS gaming its own P90 latency target — and one self-correction: a commenter called the lead example bogus, realized it predated a policy change, and withdrew it. The marathon spikes turn out to be social, not just vanity: pace-runners with flags.