How fast should a fastball be?

[ohms_law]

4. How do I get this target off my back?

You're doing fine... you don't need to argue every point until you and everyone else is blue in the face, is all. State your opinion, others will do the same, and move on. That's really been the only problem ever, is that there's a certain group of people (and it's definitely not just you) who just won't let it go. If a couple of y'all get together in one thread, all of a sudden we get 50 posts in the space of an hour or two with nothing but back and forth talk about... well, nothing really.

[HoustonGM]

I think he qualifies his "averaging out" point well, nor does he say it's a fact - rather, an assumption:

As for the other effects, like pitch sequence, count and the like: from necessity, I'm going to assume that this stuff averages out. I'm forced to do this because if I divide the data up too much, I won't have enough pitches in any sub-group to analyze.

He had to, or he wouldn't have any remotely significant sample size.