One of my big regrets is that Facebook hasn't had a major chance to shape the mobile operating system ecosystem.

In television you go in with this operating system that it is a crapshoot.

It's something any operating system vendor has to have.

There is no neat distinction between operating system software and the software that runs on top of it.

breaks the operating system spectacularly.

The definition of an 'operating system' is bound to evolve with customer demands and technological possibilities.