Dave.There are so many differnt parts to just a simple drive which gets us onto the first Quick (if we are doing Foxtrot ). There has to be a slowing down towards the end of the drive which some would call light and shade. Which is a natural law. By that I mean if you fired a bullet and it travelled without hitting anything it will slow down and drop to the ground. It will be losing speed from the time it left the barrel So do we untill we flex, recharge bend or whatever you can call it. Ready to fire away again , which is normaly on beat 1. or a Slow. But as it has been pointed out before, It's been argued about since 1922.