It's not in any way a physical limitation that Dart is slower than Java. It's just somewhat harder to make fast, and even then, some of Dart's design is motivat

It's not in any way a physical limitation that Dart is slower than Java. It's just somewhat harder to make fast, and even then, some of Dart's design is motivated by being able to implement the language efficiently. [1] Dart could even in theory have a compiler that assumes all your type annotations are correct and simply AOT compiles your code. (So your workflow would be: develop -> fix type errors -> run in regular VM -> loop -> AOT compile -> deploy.) Whether that would be useful is another matter, but it could certainly be possible (some Common Lisp implementations in fact do exactly this [2]). -- 1: https://www.dartlang.org/support/faq.html#q-why-dart https://www.dartlang.org/support/faq.html#q-why-dart 2: http://www.sbcl.org/1.0/manual/Declarations-as-Assertions.html http://www.sbcl.org/1.0/manual/Declarations-as-Assertions.ht...