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… it's time for the opening lecture in Test Design 101: Consider: a woman claims to be a musician. You seat her at a piano and demand that she prove her claim. She cannot play the piano, and you conclude that her claim has been invalidated. Hardly. You see, the lady is a cellist….
You cannot challenge a claimant to do something they've never claimed they can do. That's why, at the JREF, we design a protocol only after the applicant has clearly stated (a) what they can do, (b) under what conditions, and (c) with what expected degree of success. And, the applicant must find the protocol appropriate, fair, agreeable, and adequate to prove their claim.
--
Swift, 21 October 2005, "Good Intentions"; about testing paranormal claims

 

James Randi

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Brother, I was glad to hear what you told us. you said that if we could prove that the land was sold by people who had no right to sell it, you would restore it. I will prove that those who did sell did not own it. Did they have a deed? A title? No! You say those prove someone owns land. Those chiefs only spoke a claim, and so you pretended to believe their claim, only because you wanted the land. But the many tribes with me will not agree with those claims. They have never had a title to sell, and we agree this proves you could not buy it from them.

 

Tecumseh (popular pronunciation of Tecumtha)

 

I don't think too much about the electronic thing, except that it's kind of fun to have it as an alternate voice. Like, I've used the Fender- Rhodes piano on a couple of records. I don't really look on it as a piano— merely an alternate keyboard instrument, that offers a certain kind of sound that’s appropriate sometimes. I find that it’s kind of a refreshing auxiliary to the piano— but I don't need it, you know. I guess it’s for other people to judge how effective it’s been on my records; I enjoyed it, anyway. I don't enjoy spending a lot of time with the electric piano. I mean, if I play it for a period of time, then I quickly tire of it, and I want to get back to the acoustic piano.

 

Bill Evans

 

Changing a rod into a serpent and the serpent back into a rod may be clever magic, but how does such a demonstration prove that Moses spoke to God? If the only thing necessary to prove the truth of an extraordinary claim were to demonstrate an ability to bewilder, there would be no more mysteries to solve.
If a person claims that he can bring the dead back to life, and in proof of that power pulls a rabbit out of a hat, that is hardly a demonstration of the truth of his claim; it is merely an example of his ability in the art of deception. If he claims that he can fly without wings and without the use of mechanical help of any kind, and in proof of his ability pulls another rabbit out of another hat, that is not proof of his ability to fly, but of his ability to lie, and he will without much hesitation be condemned as a faker. The demonstration of one thing has absolutely no bearing in proving the truth of the other, when there is no relationship between them.

 

Joseph Lewis

 

The atom can't be seen, yet its existence can be proved. And it is simple to prove that it can't ever be seen. It has to be studied by indirect evidence — and the technical difficulty has been compared to asking a man who has never seen a piano to describe a piano from the sound it would make falling downstairs in the dark.

 

Carl David Anderson

 

So to the book's provocation, the statement that nearly half the people in the United States don't believe in evolution. Not just any people but powerful people, people who should know better, people with too much influence over educational policy. We are not talking about Darwin's particular theory of natural selection. It is still (just) possible for a biologist to doubt its importance, and a few claim to. No, we are here talking about the fact of evolution itself, a fact that is proved utterly beyond reasonable doubt. To claim equal time for creation science in biology classes is about as sensible as to claim equal time for the flat-earth theory in astronomy classes. Or, as someone has pointed out, you might as well claim equal time in sex education classes for the stork theory. It is absolutely safe to say that if you meet somebody who claims not to believe in evolution, that person is ignorant, stupid or insane (or wicked, but I'd rather not consider that).

 

Richard Dawkins