I think it's weird that there are all these metrics, calculations and theory based on the length of one's legs; and virtually nothing addressing the length of torso and arms, hand size, shoulder width -- all the upper body stuff. My guess is because it's harder to make a rule or equation about a really complex relationship with too many variables. But when it comes down to it, the problems I have aren't with bike height (that's easy to adjust by raising or lowering seatpost), but with the space between where I sit and where I plant my hands. Seat rails don't provide much adjustment, and buying new stems is somewhat expensive. So one of my dream products is a really high-quality adjustable-extension stem, that looks like a million. Come on Rivendell/Nitto or V-O, I think there's a marketing opportunity here!