Facebook has this famous poster that says move fast and break things. But at the same time they manage to be obsessed with quality.

We talk to a team they've gotten new things done, that's the best predictor we have that a company will be successful.

Here's a good rule of thumb: don't worry about a competitor at all, until they're actually beating you with a real shipped product.

... for the top twenty most valuable YC companies, all of them have at least two founders.

What being a founder means, is signing up for this years long grind on execution - and you can't outsource this.

In YC experience, 2 or 3 co-founders seems to be about perfect.

If you compromise and hire someone mediocre you will always regret it.