So the structure of the bricks does not force the function of the building. Bricks can serve many different functions while maintaining their structure. And the structure of a building does not force its function, either. The same structure can serve many different functions.
I agree that scientists are studying the brain, learning how structure and function are interrelated. I just haven't seen anything that defines specific functions based upon specific structures. There are many generalities, and a hell of a lot left to learn.
And yet when scientists test these claims they find that, while A will sometimes alleviate B, sometimes it will do nothing, and sometimes it will affect C. They also find that sometimes when D is done to the body, B will seem to be alleviated, despite the fact that the acupuncturists claim something completely different. The placebo effect is well documented, and nothing I've seen regarding acupuncture, or many other alternative medicines and procedures, shows any greater effects than the placebo. Sure, poking a needle into the body is going to induce the body to produce endorphins, which alleviate pain. No big surprise there. But there is, as yet, no credible, verifiable evidence to show that acupuncture does any more than that. And it certainly does not perform as claimed by its proponents.found that when A is done to the body, it alleviated or corrected whatever B