Excellent questions! That I hope someone will investigate. But brockf seemed skeptical that it was even possible for there to be an evolutionary process that produced humans with a statistical-learning-engine in their brains for language. Which I find curious, since - and this is my point - the same can be said for everything that is a result of evolutionary processes. That is, his complaint has nothing to do with language and statistical processoes. The same complaint could be lobbed at eyes.