This challenge sounds a bit off because: 1) I'm struggling to wrap my head around twitter being cited as an example of software best practices. 2) How many ma

This challenge sounds a bit off because: 1) I'm struggling to wrap my head around twitter being cited as an example of software best practices. 2) How many man-hours are we talking about here? How do we get that data? 3) Once such a thing exists i'll start believing the hype. I think you got that the wrong way around. The "mainstream" programming world has always been imperative (C and C like language). The "hype" is the other way round, Scala/Haskell/Erlang will save us from certain doom etc.