“Let me be explicit: It seems to me that the “is” in the above sentence should be taken as the “is” of identity. The mental event and the physical event are identical in exactly the same way that hitting a particular musical note and moving one's vocal cords in a particular way are the same event. Here I go farther than Melnyk, who tells me by private communication that he remains agnostic as to the identity of mental events and their physical realizers. For me, “realization” is best construed as an identity relation between mental-act tokens and physical-act tokens. I think that we need to see that the essentialist Cartesian concepts of “mental” and “physical” as mutually exclusive categories is an obscurantist, religiously based holdover from the seventeenth century, one that should no longer have any place in our discussions of mind”