Founders

the most important thing i've learned this year is that most startups only have one important problem to figure out at a time. 

instead of improving the all functions generally, as a founder, your job is to correctly identify that one problem, and relentlessly work on it until it's solved

it's almost as if YC was onto something :P

relentless focus and disciplined iteration to make something people want

Less is more
Simple is best
Small is beautiful

Theory of constraints.

https://leoncoe.substack.com/p/theory-of-constraints-for-startups