things that go against the grain if he thinks he can get ahead of the curve, but I don't think it has worked out for him the way he hoped, take hockey subs for example, I get that there is a research paper about the benefits of performance when rested.

In practice though, the drop off in talent, and lack of continuity in playing in the game doesn't justify the practice.

There is a reason nobody is doing this in football, because the benefits do not outweigh the costs, and it isn't hockey where there are very few stoppages in action where the recovery does outweigh the costs.

His Hockey sub theory is a good example of proving your point, but also proving that just because he is smart in some areas, doesn't necessarily translate to football success in all areas, and in fact can be detrimental, and has been in ways.