The rule says, “80% of the results are coming from 20% of the effort.” It means that when you’ve put 20% of the time working on your task, you’re already 8/10’s done.
How to Beat Perfectionism With The 80/20 Rule
George Halachev
1933

This is a faulty premise. Who says the 20% of the effort which most impact the results have to be the beginning 20%, and not the concluding strain of effort, or even slices of effort interspersing the long, arduous time spent on the job?

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