... the thing we see wrong with YC apps most frequently, is that people have not thought about the market first and what people want first.

People that are really smart and that can learn new things can almost always find a role in the company as time goes on.

I prefer to invest in a company that's going after a small but rapidly growing market than a big but slow growing one.

Don't let the company get distracted or excited about other things. A common mistake is that companies get excited by their own PR.

Most things are not as risky as they seem.

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.

Most great companies in tech have been built by personal referrals for the first...at least 100 employees and often many more.