Pent: before I respond, what do you mean by closed loop machine?
What I was getting at was there's nothing going on in biology beyond the system itself. "Art" has no fucking place in it. It's hard science and any stuff that isn't hard science will be once there's been more research.
I'm a massive fan of the placebo effect, btw, and I'd love to hear of someone keying into that particular psychological feedback mechanism minus the hoodwinking thing but, until they do, it's a massive unpatched exploit for woo peddlars to fill with whatever artistic bullshit they damn well please. This is disingenuous because the effect of crystals and reiki and fucking - insert gobshite here - is limited to the gullible.