A good read but containing nothing original, though I guess that’s kind of the point of an intellectual biography… His exposition of Chomsky’s work in the theory of syntax, and the subsequent revolution in the way in which language is studied is pretty good: begins (essentially) by talking the inadequacy of finite state automata (no memory): basic idea is to show that there are infinitely many palindromic sentences (to be more precise there is analogue construction to S -> a (S) a; S -> b (S) b in the English language!) in English but no finite automaton can recognise exactly this set; then provides a *heuristic* proof that even the more powerful context free grammars (now have recursion and some level of memory: equivalent to push down automata in computer science lingo) are also incapable of capturing the grammatical subtleties of English (natural language more generally), though the reasoning here is closer to an inference to the best explanation. He introduces what’s called a transformational grammar and show how this provides a far simpler account of how one can generate complex sentences of English (this was one of the most exciting and tantalising parts of the book for me: just enough detail to get you thinking, but little enough to convince you that there is a vast but invisible world lying in your very midst!).
The rest of the book is about the implications of this part of Chomsky’s work for the age-old debate between Rationalists (of whom Chomsky is a somewhat mutated descendant) and the Empiricists (the behaviourists of our day, think B. F. Skinner and operant conditioning). The upshot I supposed, is that the view of the behaviourist as regards language (it’s all simple conditioning) is probably wrong, and that human language is a far more creative process than many had thought, and perhaps we humans are just an innately creative species more generally.
The last section tries to link Chomsky’s linguistic work, and philosophical views, with his work and views in politics.
It’s definitely a good intro to Chomsky’s work but it's probably no substitute for the real deal (read this because I've always been fascinated by Chomsky's work and now I can happily say that I have *some* level of understanding).