Choice of sources can shield extreme bias behind a façade of objectivity. - Noam Chomsky

Science is a bit like the joke about the drunk who is looking under a lamppost for a key that he has lost on the other side of the street, because that's where the light is. It has no other choice.

Newt Gingrich ... quite demonstrably is the leading welfare freak in the country.... His own district in Cobb County Georgia gets more federal subsidies than any suburban county in the country, outside of the federal system itself.

There are many facts about language and linguistic behavior that require explanation beyond the fact that such and such a string (which no one may ever have produced) is or is not a sentence. It is reasonable to expect grammars to provide explanations for some of these facts.