> I imagine Dart may provide a better playing field for the
  > developer in the future.

It was mostly igonred in comments but Bray did get at least one point right: the gazzilion of JS frameworks and none really solving the problem. Replacing Javascript with Dart will not solve the problem. I doubt it will be ever sold, really, and wish people stop trying to pull web tech by the ears. Other platforms offer you mature and complete frameworks, web has none of that. I hope to see the day when people realize that "Internet enabled" does not mean "HTML enabled" and get back to "the right tool for the job".