In his article for Argumenta, Professor Hacker essentially reiterates views he had presented, at much greater length, in his recent book Wittgenstein: Comparisons & Context (Oxford University Press, 2013). Here I will not discuss such views, as I already did so, albeit briefly, in a review I wrote for the Notre Dame Philosophical Reviews (25.10.2014). However, as Hacker polemically discusses my review in his article, I should like to reply to some of his criticisms. I thank the editor and board of Argumenta for providing this opportunity. In my review, I commented on Hacker’s view that understanding a word, sentence or utterance is no mental state or process but “is more akin to an ability” (Hacker 2013: 104, 148).