1979
Douglas Hofstadter coins Hofstadter's Law
In GödelKurt Gödel — his incompleteness theorems showed limits on what formal mathematics can prove., Escher, Bach, Douglas Hofstadter states the recursive scheduling joke that became a staple of software estimation.
Quote
“It always takes longer than you expect, even when you take into account Hofstadter's Law.”
What it was for
Hofstadter's Law is self-referential on purpose — you pad the schedule, then pad the padding, and still slip. Every sprint retrospective and waterfall postmortem cites it, usually while missing the next deadline.
People
- Douglas Hofstadter — author
Why it's here
The funniest accurate model of software project timelines.
Why it mattered
It named the optimism bias that planning tools rarely fix.
What it solved
TeamsMicrosoft Teams — chat, video calls, and Office integration for workplace collaboration. kept underestimating complex work despite prior experience.
Media
ImageDouglas Hofstadter"null0", CC BY-SA 2.0, via Wikimedia Commons