[aaa_aaa]

Groovy is not Java.

[usrusr]

But it's a brilliant example of everything that could possibly go wrong if you blindly optimize for hello world

[cies]

Or you get jealous of the runtime errors the JS, Rails and Python teams have.

[speed_spread]

Or invent entirely new classes of errors with static type annotations that are actually utterly ignored.

[gkfasdfasdf]

Neither is the final sample presented in the article! But I think the point is that Groovy already exists and can run most Java programs as well.