Time I'll never get back.......

So I just spent the last three days teaching Thermal Theory to a group of my co-workers. I'm no scientist, so my teaching method is very un-sciency...but if I can explain the theory well enough to middle school science classes and Congressmen [both of which are on about the same intellectual level], why can't a group of professional, retired military trainers grasp the concept.....after THREE DAYS? I mean, we have cartoon graphics and everything!!!!