You don't need to be a computer scientist to use a Windows Phone. I think you do to use an Android phone.

I meet with Satya [Nadella] what probably amounts to four or five times a year - either to brainstorm something or just as a shareholder, we'll sit down and chat. That's always quite helpful for me and hopefully him in terms of thinking things through. I still have a number of friends and colleagues who occasionally want to brainstorm or chat about something, and that's always fun.

At Microsoft I had many years of experience and history and seeing connections. With my direct reports, the job at Microsoft was to delegate and then be able to properly review, but not to micromanage. To have a way of connecting and integrating without getting in the way.

If the CEO doesn’t see the playing field, nobody else can. The team may need to see it too, but the CEO really needs to be able to see the entire competitive space.

And then you take a look at Spaces, there is this great innovation that came out of nowhere. We have the number one blogging site in the world because of the innovation that's there.

Ultimately progress is measured sort of through the eyes of users.

I don't think there is one size that fits all. I've been to too many meetings with journalists who spent the first 10 minutes of the meeting setting up iPad to look like a laptop.