Is this bunk? It seems to be a repeatable phenomenon, but has there been any documented (reputable) proof?
Bunk. Completely bunk. And that includes modern scams like the Quadro Detector.
James Randi on the subject of dowsing:
Why do you say it seems to be a repeatable phenomenon? You mean people keep on believing that it works?
I guess it’s like a Ouiga (sp?) board, same shyster, same result.