I am actually at the conference now, Mark is here too, but I will try to give a brief answer:
Mark and I have discussed brain entrainment at length, but neither one of us is an expert. So, I don’t think either of us is in a position to teach anything on it. And I do not have the background or time to try to sift through the mountains of mis-information about it circulating on the Internet.
My priority is: Solve the problem of chronic pain using PEMF.
Mark’s priority is: Develop a tool to make reliable measurements of cortex function using non-invasive somatosensory testing.
Each of these is the work of at least a full life-long career, working about double or triple the normal hours in a work week, usually for the first two or three decades at least. So, we can’t know everything about everything.
Also, what we do know about is based upon and is in the context of a much broader, comprehensive grasp of an entire scholarly field. We would view each individual scientific paper or someone’s opinion on these matters in that way, through the lens of decades of diligent study.
So, it is very difficult for either of us to enter into these discussions in a way that we feel is both accurate and helpful.
With all of that said, my general comments on brainwave entrainment are:
I agree with your assessment that some mystical, non-scientific communities have built up around this (and many other) health issues, and a lot of speculation and imaginative musings is passed off as if it were real knowledge.
I think this is mostly because there is a lack of real knowledge. When the facts are absent, people will just make stuff up. This is directly analogous to the current problem with popular information on PEMF: the science on the mechanisms of PEMF is pretty thin, so non-scientists, charlatans, and others just make stuff up.
Keep in mind: a wild guess is not at all the same as a scientific hypothesis. So wild speculation should not be viewed in the same light as real science just because “well, it could be possible”. I say this because many people who put these ideas out there will retreat to statements such as"Well, that’s my hypothesis…" if you challenge their facts or logic.
But based on what I have seen and heard about it, I would speculate that for brainwave entrainment, as for PEMF in general, individual responses are highly variable. What works well for one person may not work well for another. So if you decide to experiment with it, I would do so cautiously.