This is great. Steve Jobs actually described the iOS file system idea 2 years before it was released. And it made a lot of sense then. It still does today, at least to me. This is my favorite part:

And eventually,the file system management is just gonna be an app for pros and consumers arent gonna need to use it.
This gives me hope. I’ve had doubts about what the Mac would look like if iOS came fully to the Mac, and Finder weren’t around any longer, but I think Apple would just make Finder into just another app that you launch when you need to do file stuff. I’m sure it would take some getting used to, but I think I’d be ok with that idea. Mac users would just need something a little better than Springboard as the default app for managing apps.

And, if you really think about it, though it may not have been their goal explicitly, this is what Microsoft has accomplished with Windows 8. The classic desktop is essentially the “pro app” that you need to manage the file system. Everything else is Metro apps (if Microsoft had their way).