Since you're still here, what's your take on the value or lack thereof of long runs, say a mimimum of 90 minutes or 13 miles arbitrarily, for half milers and of Arthur's belief that the 800 WR should be at least 1:40 because there are so many people capable of running 45-46 for 400 meters that if you developed their aerobic abilities properly they should be able to do back to back 50s? And if you don't want to respond to that, what's your opinion of run-on sentences?
ok, what Lydiard says is that aerobic conditioning(long runs) WILL produce a 1:40 800 from an athlete, who is already running 45-46 sec's for 400. maybe for some, but not for all. In order for these 400m guys to run an 800 in the 1:40 range, then they must have naturally high fatigue resistence and running economy. sure these sprinters will have some improvement in their 800m time with endurance training, but without the key genetics, the training will only go so far.