For younger people, just in case:

flakiness • yesterday at 6:33 PM • 1 reply • view on HN

For younger people, just in case: https://xkcd.com/303/

iso1631 • yesterday at 6:38 PM

And for those scoffing

And for those who are feeling smug, that last one (which I still consider fairly recent) was 14 years ago

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