If it works out, you're going to be working on this for 10 years.

The other piece besides focus for execution is intensity. Startups only work at a fairly intense level.

You should think about for the next 10 years, you're going to be giving out 3-5% of the company every year.

If it takes more than a sentence to explain what you are doing, it's almost always a sign that what you are doing is too complicated.

You should be giving out a lot of equity to your employees.

You really want to know your cofounders for a while, ideally years.

M&A negotiations feel really fun. This is one of the biggest killers of companies, is they entertain acquisition conversations.