"There's going to be a lot of superstition and cargo cults."
I'm willing to hedge my bets that an immutable functional language has a much higher tendency to remain legible than something else. But it will be a very interesting experiment in the history of computer languages IMO.
I also felt Tim was tempting fate when he said "You can import directly from a self published URL. Of course it's the responsibility of the publisher to never change the semantics of that code in an incompatible way."
I just can't imagine that working at scale. I bet they add semantic versioning support pretty quickly.