Have you heard of these? More likely about the first one than the second.
Here are the definitions:
Parkinson’s Law: „Work expands so as to fill the time available for its completion.”
Hofstadter’s Law: „It always takes longer than you expect, even when you take into account Hofstadter’s Law.”
These two seem to contradict at first, seem to complement each other at the second look, and turn out to say exactly the same thing finally.
1st look:
According to Parkinson’s Law, it seems that work would always take less time than estimated under ideal circumstances, while according to Hofstadter’s Law, work seemingly always takes more time than originally estimated, no matter how big the estimation is. Contradiction.
2nd look:
Parkinson’s Law talks about large bureaucratic organizations, where people’s work is meaningless and thus they get lazy and procrastinating. Hofstadter’s Law is about aggressive and ambitious organizations where everyone is pressed to deliver results fast. Complementing.
3rd look:
According to Parkinson’s Law, preliminary estimations are screwed, as people will cheat them, and even if everything goes well, probably they won’t finish work ahead of time. According to Hofstadter’s Law, preliminary estimations are screwed, as no matter how conservatively you estimate, you’ll keep thinking for a very long time that you are always there, and then in the final moment, everything breaks down and you’ll have lots more left to do. Same thing.