Occasionally you will find a...
Occasionally you will find a race horse with blinders on. These two pieces of leather keep the horse from turning his head to see horses that might be coming up on the side. When the horse turns to look, it breaks stride and could very well lose the race. Years ago a hopeful athlete went to the Olympic games to compete in the 100-yard dash. During his years of competition, he had developed the bad habit of turning his head with only a few yards left in the race to see where his opponents were. In his time trial, sure enough, he looked to the left to observe another runner.