The Mighty Awesome Power of Scala

I'm no Ruby fanboy (I once wrote a little GUI app in what was probably horribly unidiomatic Ruby). I think that he gave terrible reasons for not using Ruby (fanboyism & not enough code?). Plus he's on the JVM, so JRuby gives you access to tons of code.

If you want to use language X, then use it - there's no need to justify your choice by slating language Y.