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 YC we have this public phrase, and it's relentlessly resourceful.

You want an idea that turns into a monopoly. But you can't get a monopoly, in a big market right away; too much competition for that.

One of the biggest advantages that start ups have is execution speed and you have to have this relentless operating rhythm.

If you look at successful pivots, they almost always are a pivot into something that the founder wanted. Not a random made up idea.

Someday, you need to build a business that's difficult to replicate. This is an important part of a good idea.

Growth and momentum are what a startup lives on and you always have to focus on maintaining these.