The most common post YC failure case for the companies we fund, is they're incredibly focussed during YC on their company... and after they start doing a lot of other things. They advise companies, they go to conferences, whatever.

Because it's one of these sort of connections between nodes- every pair of people adds communication overhead.

You have to find a small market in which you can get a monopoly and then quickly expand.

If you pivot, do it fully and with conviction. The worst thing is to try to do a bit of the old and the new-it's hard to kill your babies.

One of the pieces of advice that we give at YC is: try to work together on a project rather than just doing an interview.

At the beginning, you should only hire when you have a desperate need to.

We pretty much won't fund a company now where the founders don't have vested equity because it's just that hard to do.