Another bout of Mitchell Johnson coming and The Guardian has an article and my reaction. In all this experiments with measurements, I am not sure whether what you do instinctively ( which may come from practice, particularly when young) is really be measured. Or may be there is a series of mental calculations going on right from the moment the bowler starts his run; his gait, eyes, etc...and the body is already in the process of reacting, and correcting. There is a theory that our brains are prediction- generating machines. At least, that seems to be one aspect of it. See Carl Zimmer's article.