Though some claim that their technique requires no belief at all, what they are actually meaning is that their creative virtueller rundgang » technique requires just the right amount of belief for it to work.
Or they can actually mean to give you a placebo. Since you believe them that it requires no belief for their technique to work, you go about it thinking that there is no belief involved in it, then it actually works! Then you start believing in it, only to find that (for many cases, not all) its effectiveness wanes.
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