If you want to find anything on aikido, I'd suggesting finding a Ueshiba.

I'm stumped by a lot of math problems, it doesn't mean that those problems are more real math than any other math problems.

I already stated that I don't find testimony helpful, nor endless static drills, and have already met several people (though not people you recommended) and wasn't impressed they were doing anything different than regular ol' movement. And that apparently nowhere is it stated in Chinese or Japanese by any founders that there are 'hidden' skills that are the true basis for these arts as claimed, since all texts are definitely open to different interpretations. In fact, I've stated these things so many times so it is somewhat surprising when it is claimed I haven't responded.

If others have found them helpful in improving their aikido/taiji/whatever, that is good for them. I will continue to point out that their arguments do not convince a lot of people, however.