Glenn McCarthy wrote:
you are absolutley correct, long runs are not essential for middle distance. Unless you want to be successful at the highest levels. Look at how well the US has done over the last 8 to 10 years with that attitude. The dearth of medals or even finalists at Worlds and the Olympics is unbelievable.
I will even go as far as saying that one small contributer to this failure is the BELIEF in what Craig (and you) say is essential.