ninety-ninety rule

ExpertisePredicament@lemmy.blahaj.zone to 196@lemmy.blahaj.zone – 541 points –
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oooh thats my code never works

i forgot to time travel to spend 90% of my time doing the last 10% of code. i get it now

Gotta get that sweet 180% time per time

oh, no, it's far worse than that. the last 90% is enough time to make what you thought was the first 90% become 10%.

so 0.9*expected time = 0.1* actual time

which, if you can do some very basic algebra, results in 900%. this implies that every project will seem "almost done" for about 9x the length of time you thought the project would take. in my experience, this is roughly correct

As someone who has been working on a "almost done" Task for 2 years I can confirm.