Ok. I have come up with a bit of an idea of how to explain this.
Say you want to do a wrist lock. And instead of just doing it for the joy of wrist locking people you want to use this for self defence.
Now you cant really train this lock because it rips the arm out of its socket or something. But you have drilled it and are pretty confident with it. And your instructor says it works and your friends says it looks cool.
Now in walks a nasty MMA hater and says "before you get anywhere near my wrist I am going to punch you in the face because I hate Aikido and love face punching."
Well you say "I have atemi which is Aikido for face punching. So I can defend punches and deliver my own which will get me to that wrist"
Well guess what you can test and refine that. That is called boxing. That is called MMA, that is called getting a set of five ounce gloves on and seeing if you can get anywhere near securing that arm.
Now you have spent this time and are a decent striker and you can actually touch a guys wrist in some sort of semblance of a real fight. You dont have to keep complaining he is hitting you wrong And that on the street it will be different. However he hits you. You have the skill to evade punches throw punches and touch that wrist.
Now MMA hater comes back and says" Thats groovy but I am still not just giving you that lock. I will use my amazing MMA technique called defending it."
And you say. "Well bugger. There must be a way I can find out how to get that arm keep it and screw your base up so I can actually have a chance at making the wrist lock work."
well funnily enough. There is wrestling, BJJ, sub westling. And all these other methods of seeing if you can control any variables that will either let that wristlock work or make that lock fail.
What I read is it is all about the lock.
Thanks bruce. Loved you in romeo must die by the way.
Now if you dont consider all these variables and get them in order in some manner. No matter how good you wrist lock is you have a crappy wrist lock.
Sorry I would love for there to be another easier way. But I just dont see one.