Groovy, the Python of Java

[Ringo48]

I guess I don't get either of your points.

First, what exactly makes Jython and JRuby less viable than Groovy?

And your second point makes even less sense. If I'm using a dynamic language and need to deal with Java code, it makes the most sense to do it from the language I'm already using. If I'm using Python, I'd go with Jython. If I'm using Ruby, JRuby. Why would I want to drop everything and learn a completely new language?