If it wasn't for Lance Armstrong we wouldn't be having this conversation. Spinning fast works for some people it doesn't work for others!!!!!! Just like everything else in life. If you remember watching the TDF when Lance would spin up the hills and John Ulrich would be spinning a much slower cadence you have a very good example of different styles for different people. Two elite cyclists with two completely different cadences and styles. If it was Ulrich who won we'd all be spinning like tractors.