There have been a lot of computer threads lately, and one thing I find interesting is the number of people that keep really detailed data about their rides. The other thing I find curious is how many people have computers but care more about the historical data than the live data. How do you use this info other than track progress over time? Or is that the main idea?

My experience is that instantaneous HR, cadence, and odometer do a pretty decent job of helping you manage your effort and letting you know where you are. But I'm intrigued by the Garmin 500 as I'm wondering if it could tell me something I'm doing wrong that I don't know about.