I think part of the reason you won't see it via TSP is that sometimes the training can go to FT, ST (things that don't attribute to TSP growth). They can also go into skills you have no intention of training in the long run and you may never see a pop there. I think about 1/6th of the difference can be seen there.
That part I agree on. I'd even say 1/4th to 1/5th since most training types improve at least three different skills and ST/FT are like 2/9 left. Then again the same percentage of the no-gym cross-training goes to ST/FT too, so it's more like 3-4 TSP lost there, not 10.
There are many other aspects (like whether elastics matters for cross-training, does cross-training tend to go into lower skills etc) that would make this way to over-complicated.
One thing though, and it's a huge conundrum for me because in general I am against BBs sharing this much detail with the community, but since we are already at this point - it would be cool if Justin could throw us a bone here.
