I recently came across this old bit of video footage which I thought I’d share:
What interested me is that the wrestler leaves himself vulnerable to being choked as he tries to grip the judoka’s legs. Because wrestling does not allow chokes it’s entirely understandable that he would not be fully aware of that vulnerability. However, it also is a nice illustration of how the probation of a given method can result in practises that are very vulnerable to that same method.
A method can be prohibited by rules (in competitive settings), or simply omitted from practise due to it “not being part of our system”.
I recall reading some writing of Jigo Kano (the founder of Judo) who was concerned that because punching was not permitted in randori, judoka were starting to practise in a way that left them very vulnerable to being punched i.e. hands low and chin forward.
There are lots of other example of course and every system pretty much has them. The omission of things like the option to escape (as opposed to always fight) and multiple assailants as petty generic omissions too. And because they as omitted, they are “off radar” and hence vulnerabilities exist.
What we omit in training is what we are most vulnerable to.
All the best,