I have enjoyed reading Elizaphanian and thought I'd pass it along. Here's a joke from his site I found amusing.
Three men are shipwrecked and washed up on a desert island, a physicist, an engineer and an economist. Once they have dried out and come to their senses, rubbed the salty grime from their eyes and looked up at their surroundings, they see that there isn’t much on their island. Lots of rocks, the occasional palm tree, a passing bird, and – miracle of miracles – a crate of tinned food. But!.. no tin opener.
Each man comes up with a way of getting the food out of the tins, appropriate to their training.
The physicist says “I know from my study of the law of gravity that if I climb that tree and drop rocks onto the tin, that the force exerted will be sufficient to split the tins, and then we can eat the food.”
The engineer says, “No, no, I’ve got a much better idea. If we use the branches of the tree as a lever we can swing rocks against the tins, and that will make things much more accurate.”
Then the economist joins in: “Hold on a second. First, let’s assume that we have a tin opener…”