.... I'm curious to why someone hasn't claimed it.
Well there's several good attempts by the dowsers as to why no one's claimed this prize money.
1) Art has listed the first oft-cited one: That no dowsers HAVE BEEN ALLOWED to partake in the test. Here's what he's getting at:
2) That the Randi organization has set up certain criteria for what the test involves. Ie.: standards to make sure it's double blind, not susceptible to subliminal clues, etc... So therefore, if a dowser comes to the organization and says that the test should involve finding the dowsers OWN pipes (the ones he's found in his front yard, or whatever) as the "proof", then the Randi org. might reject that as not "blind". Hence the dowser then does as Art has done: Claimed that the Randi people have "dis-allowed" dowsers from demonstrating their skill. When in fact it's not that at all. It's a dispute on the PARAMETERS OF THE TEST. Hence the test "doesn't occur", Hence leading Art and his type to claim that they will not test dowsers. Amazing isn't it ?
3) The rules of the test state that the test terms must be "mutually agreed upon". That's straight-forward enough, right ? Because obviously, if the skeptics proposed to give an impossible-to-do-test, then of course the dowsers can reject that as "unfair" or whatever. Right ? Likewise if the dowsers suggest a test that the Randi people forsee as being manipulated, or not truly "double blind", then THEY TOO can reject such a test. So in other words, this is so BOTH SIDE can be certain that they've agreed ahead of time as to what the test will be . It's to protect BOTH sides, so that neither side can say later "the test wasn't fair", blah blah blah. It's not at all a "one-sided" decision of what constitutes the test. It has to be MUTUALLY AGREED UPON.
4) And art is just plain wrong that no one's been allowed to try and be tested. There's been tests and failures by dowsers. One in fact is even on Youtube. It's quite comical in that it shows their success to be no better than random chance. But I'll beat the dowser to the punch and give you their rehearsed lines:
5) The tests (that get failed, or that the dowsers refuse to partake of) are "rigged". I mean, doh, Randi is a professional magician afterall. Hence it's only obvious that he's using his "slight of hand" to somehow manipulate the results. Right? The amazing thing about this accusation is that it requires absolutely no proof! You merely claim it was rigged, and presto, it must be true. I have tried and tried and tried to ask the dowsers to please suggest a possible way that Randi rigged it. Eg.: magnets? Strings ? I don't get it. I'm totally open to suggestions as to how it's manipulated. But as of yet, no one's ever been able to suggest HOW this "rigging" is done.
I'll post some more classic come-back lines later. They're great, I gotta admit.