That's a possibility but I guess it is rare (as rare as in normal psychology, I'd say). I hadn't that in mind. Lack of proper controls was in my mind. The cheat argument (Hansel and others) is disingenious for it can never be proved wrong. You only have to allow for more cheaters (the controllers) colluding.

I hate that argument for that reason. Except when there is very good proof (W. Broad, N. Wade, Betrayers of truth, give a lot of examples, mostly from standard science).

Wolfgang