[cygwin98]

How exactly is Dart dangerous? It's open source, unlike C#.

One nit to pick here: C# is open sourced, though the .NET framework is not. Anyway, let's focus our discussion on Dart.

Somehow I had an impression that GOOG might have a plan B that would push Dart to replace JS on the web and Java on the mobile and a walled-garden that unifies current ChromeAppStore and PlayStore. JS would be totally marginalized and obsoleted. I'm not a fan of JS, but throwing away the enormous efforts done for the past decade is too much a churn and waste for me to swallow. I could hopefully be totally wrong though.

[klipt]

Tons of Google's client side code is in javascript ... I don't know why you think they'd obsolete their own code.