Some good stuff in here:

Q: Generally, who should have a larger role in evaluating college and minor league players: scouts or stat guys?

A: Ninety-five percent scouts, five percent stats. The thing is that — with the exception of a very few players like Ryan Braun — college players are so far away from the major leagues that even the best of them will have to improve tremendously in order to survive as major league players — thus, the knowledge of who will improve is vastly more important than the knowledge of who is good. Stats can tell you who is good, but they're almost 100 percent useless when it comes to who will improve.

Q: Is clutch hitting a repeatable/retain-able skill?

A: I don't know.

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.

But it's worth reading the entire chat.