Regretfully, the term “skeptic” today is being used by many who adopt that label for themselves in a misleading way. To many, it is falsely equated with the term “rationalist.” The dictionary meaning of the term indicates that a skeptic is one who raises doubts. Thus the word is meant to reflect nonbelief rather than disbelief. But when we look at those who trumpet that they are skeptics towards claims of anomalies, we find disbelievers and debunkers rather than those who express uncertainty or doubt. The public “skeptics” of today present us with answers rather than questions. As philosopher W.V. Quine (himself, ironically, one among such modern public “skeptics”) neatly made the distinction:
It is important to distinguish between disbelief and nonbelief– between believing a sentence is false and merely not believing it true. Disbelief is a case of belief; to believe a sentence false is to believe the negation of the sentence true. We disbelieve that there are ghosts; we believe that there are none. Nonbelief is a state of suspended judgement; neither believing the sentence true nor believing it false. [The Web of Belief, W.V.O. Quine & J.S. Ullian, 1978, p12]
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I would suggest to you that this conflict also occurs between one part of the scientific community and another. As our scientific institutions have developed, this becomes an internal as well as an external problem. And as these institutions have become integrated into other institutions, vested interests and non-scientific concerns (such as the control of economic resources) develop. And I suggest that as science grows into so called “Big Science,” the norm of organized skepticism begins to conflict frequently with the norm of disinterestedness. This can lead to attempts by defenders of the majority of “orthodox” viewpoint to attempt to merely discredit rather than disprove competitive minority views (especially maverick claims), and this results in what Ray Wyman (1980) has pointed out is a form of “pathological science.”
As Thomas S. Kuhn (The Essential Tension: Selected Studies in Scientific Tradition and Change, 1977) has termed it, there is an “essential tension” within science since it must on the one hand preserve its accumulated knowledge by acting cautiously and conservatively while on the other hand remain an open system ready to take in new and potentially revolutionary data and concepts. This balance is maintained through a number of methodological prescriptions which make it difficult but not impossible for the claimant of an anomaly to obtain acceptance of the claim.
First, science places the burden of proof on the claimant. Second, the proof for a claim must in some sense be commensurate with the character of the claim. Thus, an extraordinary claim requires “extraordinary” (meaning stronger than usual) proof. This latter prescription seems related to the rule of parsimony in science that states that the simpler adequate explanation is the one to accept. {a variant of Occam’s Razor; see Wikipedia}
Now I would call your attention to the fact that these rather conservative rules for evidence of extraordinary claims mean that a claim that is inadequately supported results in a simple nonacceptance of the claim. Evidence is, then, a matter of degree, and not having enough results in a claimant’s not satisfying the burden of proof. It does not mean disconfirmation of the claim. The proof is insubstantial, and the claim is unaccepted rather than refuted. The claimant is, in effect, told either to give up or go back to find stronger evidence and arguments for a possible later day in the court of science.
As a practical matter, an unproved fact is a non-fact. Science assumes the negative about unproved claims; it gives such claims low priority and low probability and ignores them. Since science is essentially descriptive (creating explanations through abstracted generalizations made about ascertained facts), it is not prescriptive (A Short History of Science and Scientific Thought, F. Sherwood Taylor, 1963, p342).
Science can speak of the highly improbable; it can not properly speak of the impossible. But as a practical matter, the highly improbable is treated as though it were impossible. Working on a perpetual motion machine is almost certainly a waste of time, but once we deem it absolutely a waste of time, we close the door on such research and violate the equilibrium of the “essential tension” and disobey Peirce’s injunction by blocking inquiry. The scientist who works on a perpetual motion machine may be playing the longest shot of all, and he may be conducting stupid science, but it is not necessarily false or pseudoscience.
... It is just citing an article featuring McKubre (leading researcher for sure) 
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? like a betavoltaic generator 
? like a Pu238 RTG 
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