There is something to be said for realism. The four minute mile didn't just topple for psychological reasons. It happened due to the development of better strat

There is something to be said for realism. The four minute mile didn't just topple for psychological reasons. It happened due to the development of better strategy (pacers), and continued to drop from there due to better training, better track materials, better shoes. The idea that it was purely a mental barrier is popular mythology.