Comment by abcampbell

Think you are missing (what I understand to be) his point.

The point is not that this is the UI of the future, the point is that there are other ways to conceptualize doing knowledge work with a machine, this is one.

Real innovation takes time...

Here's the man himself, Alan Kay, on the topic.

http://www.fastcodesign.com/3046437/5-steps-to-recreate-xero...