Reg, while I agree with your arguments and I, too, viewed Stormtroopers as a volunteer or drafted army of actual humans and whatnot, it's hard to argue with what Lucas says in commentary. Maybe at the time of the original release of the OT, this was not the case. And it can be argued as such by looking at physical and vocal variations in the Stormtroopers. But I wouldn't doubt that if Lucas could go back now and make all these "differences" uniform among all Stormtroopers, that he most certainly would. And, given time, he might just do that (2007 30th anniversary release?). Please, let's not give the man any more ideas.