I don't think that taking jobs as a reference for thinking ahead of time is specially good; In this particular video, he is presenting, to the general public, the 'file system' as a general software application that can be replaced by another one. This is totally and entirely misleading: without file system I doubt he can maintain any unified and persistent local data storage on a computer.

I understand that, ultimately, he is talking about the file explorer software application, but getting layman to confuse the two is almost a sin, as those users are potentially novice expert in the making (plus the fact that he is repeatedly say 'app', 'app', 'app', as if this would make the software application of the mac environment more of a software than on other platform ....).

If you really want to put a video of future thinking in the computing world, ... well welcome to 1968: http://sloan.stanford.edu/mousesite/1968Demo.html