> YC often also mentors founders on pivots

It doesn't seem unlikely to me that YC coined or at least popularized 'the pivot' in the context of changing business / startup directions. The first mention of using the word in that sense is in this comment [1] which explicitly mentions the usage by YC, while it only gets used when talking about pivot tables or more traditional uses of the word before that.

Edit: The "Lean Startup" blog series [2], which was quite influential, mentions 'the pivot' a little earlier than the post above, and really seems to coin it, so I guess that's the source (edit again: wrong :D).

[1] https://news.ycombinator.com/item?id=806601

[2] https://www.startuplessonslearned.com/2009/06/pivot-dont-jum...

That's a fun question! 806601 was from Sept 2009. I found 3 earlier cases of 'pivot' in the startup sense:

https://news.ycombinator.com/item?id=699611 (July 2009)

https://news.ycombinator.com/item?id=676514 (June 2009)

https://news.ycombinator.com/item?id=562739 (April 2009)

All 3 of those posts were by YC founders, so the term was obviously in circulation by then. The last of them includes a (broken) likn to this article: https://web.archive.org/web/20090703130211/https://redeye.fi....

Edit: that one was discussed here, but the comments didn't say the p-word:

Yogi Berra wisdom for startups - https://news.ycombinator.com/item?id=537331 - March 2009 (9 comments)