and patent it.

We are seeing a comeback of folders within apps in the form of play-lists and photo albums. But they're smarter, synced to the cloud, searchable, sharable and auto-categorized.

The PC is evolving and it's not clear who it will work in a few years.

It's like these great touch screens to which people insist on attaching keyboards. Leading to thing like the Asus Transformer and MS Surface.

There's a lot of experimentation going on still and it may take some time before the "post PC" gets to it's final form. It's fun to watch though.