I had hoped to get a book that fit its subtitle, "What Categories Reveal about the Mind." What I found was a diatribe against a naive form of objectivism. Certainly, naive objectivism does not work, however it does not take hundreds of pages to point this out.
But I could have put up with that if he had succeeded in other ways. The typical reason he fails is particularly clear when he discusses mathematics. Only one unschooled in mathematical foudations would believe, as Lakoff does, that mathematicians think they can prove which mathematical propositions are absolutely true. That went out not long after Kant proclaimed Euclidean geometry to be the only such truth, an idea trampled by non-Euclidean geometry.
Of course, what mathematicians do is show that if you assume certain axioms then you can show that certain theorems follow. If the axioms are true, then the theorems are true, but mathematics says nothing about the truth of the axioms and thus nothing about absolute truth at all, and Lakoff's arguments fall apart.
Much of the rest of the book also consists of setting up straw men and knocking them down, Unlike the problem with the mathematical example, there is not room in this review to give details, but the careful reader will be often be able to think of counterexamples to Lakoff's numerous supporting instances if he or she can avoid being carried away by the rhetoric.
The book considers only the environmental influences on the creation of categories and misses the role of evolutioand biological influences. This is, a characteristic weakness of taking a mainly psychological view of the subject.
The strongest part of the book is the linguistics, but it fails to hold up the rest to the point where the book is worth owning.