Recording interviews is like magic. a) It stops you from taking notes in the middle and b) you can play that recording for people..

The instant they say something you don't expect or already know, you should drop into detective mode..

You have this idea that you think is awesome. You want to have that broadest group you possibly can. You don't want to just talk to 1 type of person ….

The crucial people to get your product started for the first 6 months are not who will be using it 3 years later..