The best explanation of Einstein's Theory came from Ol' Al himself- when a reporter posed that question to him during his tenure at Princeton-- he said something along these lines- It is all based on the relation of time- you sit next to a beautiful gal on a bench in Central Park and chat, for 3 hours-and when she leaves, it seems like it was only for 3 minutes-- conversely, you burn your finger on the stove for 1 second, and the pain seems like one week--

"The field is the touchstone of the man"..