Question: What can go up a chimney down but can't go down a chimney up?
Answer: An umbrella. (from my grandfather, fathers side, his favourite joke for the children)
Answer: An umbrella. (from my grandfather, fathers side, his favourite joke for the children)
It's not the least charm of a theory that it is refutable. The hundred-times-refuted theory of "free will" owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it - Friedrich Nietzsche