It’s amazing what you can find if you slow down when you’re flipping through the channels. The other day I happened to stop at PBS and caught this wonderful documentary, “How Long Is A Piece Of String?”, published by the BBC. It features comedian Alan Davies attempting to accurately measure the length of a piece of string. Ultimately the documentary becomes an exploration of quantum physics, but along the way they cover a great bit of geography in the form of scale. In fact there’s a whole bit in the middle there where Davies attempts to measure a bit of coast line, which neatly demonstrates the coastline paradox. If you want to jump to the paradox bit, it can be found at around 2:15 through just over 5:00 in this smaller video.