Circumst‘ntial evidence, Markham, is the utt‘rest tommyrot imag‘nable. Its theory is not unlike that of our present-day democracy. The democratic theory is that if you accumulate enough ignorance at the polls, you produce intelligence; and the theory of circumst‘ntial evidence is that if you accumulate a sufficient number of weak links, you produce a strong chain.
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Ch. 22S. S. Van Dine
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On the unfalsifiable theory of global warming:"Evidence that contradicts the global warming theory, climate kooks enlist as evidence for the correctness of their theory; every permutation in weather patterns—warm or cold—is said to be a consequence of that warming or proof of it.
Ilana Mercer
There can be no question that Darwin had nothing like sufficient evidence to establish his theory of evolution. ... Darwin’s model of evolution ... , being basically a theory of historical reconstruction, ... is impossible to verify by experiment or direct observation as is normal in science ... Moreover, the theory of evolution deals with a series of unique events, the origin of life, the origin of intelligence and so on. Unique events are unrepeatable and cannot be subjected to any sort of experimental investigation. ... His general theory, that all life on earth had originated and evolved by a gradual successive accumulation of fortuitous mutations, is still, as it was in Darwin’s time, a highly speculative hypothesis entirely without direct factual support and very far from that self-evident axiom some of its more aggressive advocates would have us believe. ... One might have expected that a theory of such cardinal importance, a theory that literally changed the world, would have been something more than metaphysics, something more than a myth.
Charles Darwin
If the evidence says you’re wrong, you don’t have the right theory. You change the theory, not the evidence.
John Brunner
Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory. As philosopher of science Karl Popper has emphasized, a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions the theory survives, and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory.
Stephen Hawking
We shall see that the mathematical treatment of the subject [of electricity] has been greatly developed by writers who express themselves in terms of the 'Two Fluids' theory. Their results, however, have been deduced entirely from data which can be proved by experiment, and which must therefore be true, whether we adopt the theory of two fluids or not. The experimental verification of the mathematical results therefore is no evidence for or against the peculiar doctrines of this theory.
James Clerk Maxwell
Van Dine, S. S.
Van Doren, Mamie
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