Child and infinity

On BBC radio a few months back. A nice moment was when the mathematician recalled trying to explain infinity to a very young child

Child: "what's the biggest number there is?"
Mathematician: "what do you think it is"
Child: "um, 380?"
Mathematician: "but if you add one to that, don't you get 381"?
Child: "Wow!"
(pause, in which the mathematician assumes the child has grasped the idea that you can ALWAYS add 1 and get a bigger number)
Child" "I was really close, wasn't I?"


From slashdot