writing is interesting at first I thought writing was useful to clarify your own thinking but the problem is we humans are too easily fooled by our own imagined arguments. You write about something long enough and you start believing it, even if it's wrong. the only real test for any idea is a product in the market. That's it. You think something will work -> you put it out there -> you very quickly find out if it does because unlike your easily fooled brain, customers can't be easily fooled. PG has a great essay about this (2nd tweet) TLDR: if you're a serious builder, writing is a waste of time. VCs do it because they by defn can't build anything. You're not a VC.