For any non-English speakers, there's a subtle joke here: really you should say "because of <noun>" or "because <noun verb>" (or any grammatically valid clause), so in this case it ought to be "because of language evolution" or "because language evolves".

The "because <noun>" construct is a fairly recent thing, I think. The Atlantic "goes long" on it here: http://www.theatlantic.com/technology/archive/2013/11/englis...