 Consider three concrete particulars which are the same shade of red…each of these concrete particulars has a red trope—call these tropes F, G, and H—and these concrete particulars exactly resemble each other in colour because F, G, and H exactly resemble each other in colour. But it seems that this account is incomplete. It seems that the account should further claim that resemblance tropes hold between F, G, and H. That is, it seems that there are resemblance tropes holding between the members of the pairs F and G, G and H, and F and H… Let us call the resemblance tropes in question R1, R2, and R3…each of these resemblance tropes in turn exactly resemble each other. Therefore, certain resemblance tropes hold between these tropes…we are launched on a regress.