Eponymous Law: Hofstadter's Law
Well I wanted to post a summary of a video, but since that isn't yet working out how I wanted I will just post a quote/aphorism/eponymous law to keep the momentum rolling:
Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
For those interested in more: https://en.wikipedia.org/wiki/List_of_eponymous_laws