from Amazon
Thursday, December 13, 2007
Randomization
They could even have a randomized trial of randomization — they could randomly assign the pitches for half the at-bats to be called in the traditional way (by the coach or the catcher) and the other half could be called by a random strategy established in advance. It would be a double-blind study, because neither the pitcher nor the hitter would need to know which system called the pitch.
If it turned out that the random strategy reduced the batting average of your opponents, that would be pretty strong evidence that it was a better strategy.