"And might there not also be some reader who would say 'I accept A and B as true, but I don't accept the Hypothetical?"
"Certainly there might. He, also, had better take to football."
"And neither of these readers," the Tortoise continued, "is as yet under any logical necessity to accept Z as true?"
"Quite so," Achilles assented.
"Well, now, I want you to consider me as a reader of the second kind, and to force me, logically, to accept Z as true."
"A tortoise playing football would be -- " Achilles was beginning "-- an anomaly, of course"