I thought it was time to give the popular and controversial topic of the 3 hitter its own thread.
To summarize the salient points of the controversy:
-Until the rise of baseball analytics it was generally accepted that the best overall hitter on the team should hit third.
-Recent statistical analysis, however, has cast a lot of doubt on the validity of this policy. The analysis has shown that the 3 spot is not the optimal place for your best hitter, largely because of the number of times that spot comes up with two outs and the bases empty. The analysis suggests that the 4 and 5 spots provide more RBI opportunities, and that the 3 spot should be occupied by the team's fifth-best hitter, after the 1, 2, 4 and 5 spots are filled.