Breaking Barriers

In sports there have been certain barriers that, once broken, suddenly get surpassed by a surprising number of athletes. The 4-minute mile is an obvious example. Initially it was thought to be unbreakable, but as athletes got closer and closer, they realized it would be broken – and suddenly, a good number of athletes did so in close succession. Today college level athletes break that barrier with some regularity.

"There are no constraints on the human mind, no walls around the human spirit, no barriers to our progress except those we ourselves erect." Ronald Reagan