Sorry, I wasn't clear enough - I didn't miss the point you were making, and I completely agree with it (one of my other comments somewhere on this page makes th

Sorry, I wasn't clear enough - I didn't miss the point you were making, and I completely agree with it (one of my other comments somewhere on this page makes that same point), I was just pointing out the flaw in your example that travelling forward through time zones many times won't make more of a difference than doing it just once.