"How can they go down after coming up unless they stop between?" I asked.
"Wait till you get to the Higher Mathematics."
"Then where do the seconds come in?"
"They don't come in: they are in all along."
"Then," I said triumphantly, "look at that clock face. Can't you see how the big hand goes jerk, jerk?"
"Well, what of that?"
"What of that? Why, if the seconds aren't the stoppages, what becomes of time between the jerks?"
"Why," answered Billy, "it's plugging ahead all the time."
"All what time?" I countered, convinced now that I had him in a vicious circle.
"Blockhead!" cried Billy. "Don't you remember what that old Johnny told us in the Park? There's all the difference in the world between the time and time."