I have never really been a follower of James or sabermetrics. I have been really suprised about his attitude towards the actual game played on the field. I liked this answer but James basically admitted that the actual management of the game is much more difficult than people give it credit for.Q: Shouldn’t in-game strategic decisions be made by a computer? Or, more to the point, isn’t there always a correct choice?
A: It is totally impossible to isolate the correct strategic choice in almost all real-life situations, for the simple reason that all real-life strategic situations involve dozens of variables, many of which have not been thoroughly tested by trial. People who think that they know when a manager should bunt and when a manager should pitch out and when a manager should make a pitching change are amateurs. People who have actually studied these issues know that the answer disappears in a cloud of untested variables.
I think James' type analysis if very useful for front office decisions with regard to signing players and letting players walk but the actual game being played on the field can defy his type of analysis.