Watched last night on your recommendation and it was pretty good, seems that they have been here for ages.......................................................... I don't think, different prospective though.
http://www.theatlantic.com/health/archive/2012/05/eureka-when-a-blow-to-the-head-creates-a-sudden-genius/257282/
Like in this article, how do we know that aliens don't creep in, at a time of weakness, the invisible ones that is and the merging of brains leading to this.
I think it would be arrogant and foolish to think that we were alone in the universe, or that there maybe only one universe!
That said, I don't think anything is coming here, apart from space rocks.
Could explain why some people wake up and can speak a different language, or play the piano etc.when they couldn't before.
I could live without the language thing, but I would love to be able to play the piano.