I shall venture to affirm, as a general proposition which admits of no exception, that the knowledge of this relation is not, in any instance, attained by reasonings a priori, but arises entirely from experience, when we find that any particular objects are constantly conjoined with each other.

Ted Honderich's ‘Causes and If p, even if x, still q’ contains many good points I shall not discuss. My discussion is restricted to some of the points Honderich makes about causal priority in the final two sections of his paper. He considers several proposals, new and old, for accounting for causal priority before he presents a tentativeproposal of his own. He thinks that some of these proposals, besides having difficulties peculiar to themselves, share the deficiency of lacking the proper character. When we look for the difference between causal circumstances and causes, on the one hand, and their effects, on the other, he says,

We are not pursuing any difference between these things. We arepursuing a difference of a certain character. What we are after has to do with what we say: that causes and causal circumstances make their effects happen, and not the other way on, and that causes and causal circumstances explain their effects, and not the other way on.

McTaggart's argument for the unreality of space, unlike his argument for the unreality of time, has nothing to do with token-reflexives. The argument for the unreality of time depends on the contention that there would be no time if there were no facts whose descriptions essentially contain temporally token-reflexive expressions such as ‘now’, ‘past’, ‘present’, and ‘future’. According to Michael Dummett, McTaggart was right not to make an analogous claim about space