The way I see it, a personal computer should enable four things. The fact that they all start with C is a nice coincidence.
- Create
- Consume
- Customize
- Communicate
In a perfect world, your PC should enable you to create things, consume the things other people have created, communicate with people, and customize the way you do each of these things to suit your tastes.
Of course, each of those headers has its own sub-items, and that's where things get interesting.