I'm not changing definitions. When I say "training fighter," I'm referring to someone who has formally trained in a codified style.
It's other people saying experience is training.
Here's the problem with this:
When I was younger, and I used to change the brake pads on my car, I used to miss one important step: I didn't bleed the system of the brake fluid. I merely poured in the brake fluid, and waited over the course of a few days for the brakes to get hard again. Why did I do this? Because I thought that's how it was supposed to be done. By the way, I did it this way before 15 years before I learned the hard way that I was doing it wrong (the brakes won't work AT ALL on a 1997 Chevy Lumina if you don't bleed them).
My point is that is that just because you have experience doing something doesn't mean that you're doing it correctly. Especially if you were not taught the correct way to do it.
and other people cant fix cars no matter who instructs them and for how long.
most things have an immediate feedback loop, if you can't tell your brakes don't work when you drive the car then that's a significant cognitive defect in you, if you concluded your supposed to drive round with no brakes for two weeks while gravity worked it magic, then you have far greater problems to work on. that's not at all failure of people's ability to learn things without formal instruction, that's you not being capable of working a box of matches
fighting like fixing cars has an immediate feedback loop, ''that hurt, won't do that again'' '', that hurt him, do that again''
its also more than possible to pick up good technique by watching others, even watching boxing or mma is showing good technique that you can then develop by trial and error
which is really only a slightly altered version of someone demonstrating a technique in formal training and you going off to practice
formal training has distinked limits, you cant get more out than their natural talent will allow, thats general why talented children become talented adults.
if your putting forward that there are people who have spent years being instructed in martial arts that cant fight their way out of a paper bag, then i agree. if you saying that no one who trains TMA can fight then your very very wrong
nb its very rare , if you do it correctly, that you need to bleed brakes after changing the pads, that didn't need bleeding before hand, it does take a short while to bed the brakes in, perhaps that what confused you. or you were just doing the whole thing wrong