[antisthenes]

> but in the fictitious scenario you're making, if everything, I mean absolutely everything, is done in 4 days and you're just spending the 5th doing nothing, this isn't Parkinson's law at play, this is just inefficiency.

"Absolutely everything" can never be done, because you have things like unknown unknowns. Things that reveal themselves further on in the project and are almost impossible to anticipate.

Alternatively, things like "improving documentation" can also be done nearly in perpetuity. There are always more use cases, caveats and scenarios to describe or examples or onboarding materials to refine for future newcomers.

These are the less-critical things that should be done on a Friday at the pace of the person who is performing them.