If I learned one thing working at Facebook: If users are trying to use your app in a certain way, get out of their way and let them.
My best entrepreneurial advice is to start.
Simple and intuitive design is what inspires and drives me.
I have two iPhones, one for day and one for the night.
There are a lot of things that are uncomfortable and hard to do, and the longer you put off those things, the harder they get.
Innovation often starts with the ordinary. They simply took what was "normal", and added a twist. They added an innovation. The innovation solved a key problem of the "normal" use case that we all already understood.