Usually when you hire more engineers, you actually don't get that much more done, you actually sometimes get less done.

Treat customer support as a product.

Possibly the most important thing you do is actually edit the team.

There are three things you need to do as a CEO-founder. Think strategically, drive design, and drive technology. Some people who are really good at one can build a pretty foundational company. Most people who are very successful are good at two. But Jack is the only person in the Valley I've met who's all three. He's a first-rate strategist, a first-rate designer, and a first-rate technologist.

The job of an editor is to ensure a consistent voice.

You really need to spend a lot of your time focussing people.

The first thing that editor does is they take out a red pen, or nowadays you go online, and they start striking things. Basically eliminating things, the biggest task of an editor is to simplify, simplify, simplify and that usually means omitting things.