No, I said the Language Instinct talked about science and the brain, and Better Angels talked about political questions. One is scientific, one is polemic.
Pinker refers to Noam Chomsky in his scientific books, and he is an author of similar note. Chomsky writes mathematical formulas to describe human and computer languages, which are widely used - so there is no argument to their validity (unless you have some logical proof that Chomsky normal form can not describe context-free grammars). Chomsky also writes in other books about what he thinks about Israeli foreign policy - which is political and polemic.
I don't know how much more I can explain how there is a difference between an error-free mathematical proof and a controversial political opinion. They are apples and oranges.