Philosophers often disagree about what is absurd and what is not. Consider the sentence "Beliefs are brain states." Does this sentence express a category mistake or a brilliant insight into the nature of the mental? Philosophers disagree. So it is not always easy to say whether some philosophical thesis constitutes a great philosophical insight or a laughable grammatical blunder.
(A. P. Martinich, Philosophical Writing: An Introduction, 4th ed. [Malden, MA: Wiley Blackwell, 2016], 3)
