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If it works. I do not care how.
I agree. However, to me, something feels wrong about companies making money selling a product to people with the promise that they work when they don't actually do anything in and of themselves. It's false advertising plus taking money out of people's pockets.
IIRC, studies have also shown that the cost of the placebo had a direct correlation to the efficacy. Ah yes: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4345649/
Conclusion:
Expensive placebo significantly improved motor function and decreased brain activation in a direction and magnitude comparable to, albeit less than, levodopa. Perceptions of cost are capable of altering the placebo response in clinical studies.
Oh my gosh. My brain is so stupid, is the author of this message.
It's not stupid if it works