“According to the most influential twentieth-century philosopher of science, Karl Popper, a theory is scientific only in so far as it is falsifiable, and should be given up as soon as it has been falsified. By this standard, the theories of Darwin and Einstein should never have been accepted.”

— John Gray , book Straw Dogs: Thoughts on Humans and Other Animals

The Human: Science's Irrational Origins (p. 22)
Straw Dogs: Thoughts on Humans and Other Animals (2002)

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British philosopher 1948

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“The Steady State theory was what Karl Popper would call a good scientific theory: it made definite predictions, which could be tested by observation, and possibly falsified. Unfortunately for the theory, they were falsified.”

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“Until creationists accept that their claims must be falsifiable and show how they could be falsified, creationism cannot be said to be a scientific theory.”

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Source: Just a Theory: Exploring the Nature of Science (2005), Chapter 4, “Falsificationism: If It Might Be Wrong, It’s Science” (p. 75)

“Of the three great skeptics I interviewed, Popper was the first to make his mark. His philosophy stemmed from his effort to distinguish pseudoscience, such as Marxism or astrology or Freudian psychology, from genuine science, such as Einstein's theory of relativity. The latter, Popper decided, was testable; it made predictions about the world that could be empirically checked. The logical positivists had said as much. But Popper denied the positivist assertion that scientists can prove a theory through induction, or repeated empirical tests or observations. One never knows if one's observations have been sufficient; the next observation might contradict all that preceded it. Observations can never prove a theory but can only disprove, or falsify it. Popper often bragged that he had "killed" logical positivism with this argument.”

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“The aim of science is to falsify theories and to replace them by better theories, theories that demonstrate a greater ability to withstand tests.”

Alan Chalmers book What Is This Thing Called Science?

Source: What Is This Thing Called Science? (Third Edition; 1999), Chapter 6, Sophisticated falsification, novel predictions and the growth of science, p. 83

“The progress of human knowledge depends on maintaining that touch of scepticism even about the most "unquestionable" truths. A century ago, Darwin's theory of evolution by natural selection was regarded as scientifically unshakeable; today, most biologists have their reservations about it. Fifty years ago, Freud's sexual theory of neurosis was accepted by most psychiatrists; today, it is widely recognized that his methods were highly questionable. At the turn of this century, a scientist who questioned Newton's theory of gravity would have been regarded as insane; twenty years later, it had been supplanted by Einstein's theory, although, significantly, few people actually understood it. It seems perfectly conceivable that our descendants of the twenty-second century will wonder how any of us could have been stupid enough to have been taken in by Darwin, Freud or Einstein.”

Colin Wilson (1931–2013) author

Source: The Mammoth Encyclopedia of the Unsolved (2000), p. 4

“One truth we have been able to count on concerning scientific persuit over the centuries has been that only testable theories survive the intense scrutiny of experimental science.”

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“An open society such as ours is based on the recognition that our understanding of reality is inherently imperfect. Nobody is in possession of the ultimate truth. As the philosopher Karl Popper has shown, the ultimate truth is not attainable even in science. All theories are subject to testing and the process of replacing old theories with better ones never ends.”

George Soros (1930) Hungarian-American business magnate, investor, and philanthropist

Speech at the National Press Club (2004)

“Popper’s attempt to construct a methodology from falsification may have been flawed, but the concept is central in the demarcation of science from nonscience. No matter how strong one’s convictions, a true scientist will always allow for the possibility that her results may be falsified; if she denies this possibility or refuses to abandon or modify a theory in the face of repeated falsifications, you can be sure that you are dealing with pseudoscience, not science.”

Mordechai Ben-Ari (1948) Israeli computer scientist

Source: Just a Theory: Exploring the Nature of Science (2005), Chapter 4, “Falsificationism: If It Might Be Wrong, It’s Science” (p. 75)

“The history of science should not be an instrument to defend any kind of social or philosophic theory; it should be used only”

George Sarton (1884–1956) American historian of science

Preface.
A History of Science Vol.1 Ancient Science Through the Golden Age of Greece (1952)
Context: The history of science should not be an instrument to defend any kind of social or philosophic theory; it should be used only for its own purpose, to illustrate impartially the working of reason against unreason, the gradual unfolding of truth, in all its forms, whether pleasant or unpleasant, useful of useless, welcome or unwelcome.

“The fact is that for complex systems like the bacterial flagellum no biologist has or is anywhere close to reconstructing its history in Darwinian terms. Is Darwinian theory therefore falsified? Hardly. I have yet to witness one committed Darwinist concede that any feature of nature might even in principle provide countervailing evidence to Darwinism. In place of such a concession one is instead always treated to an admission of ignorance. Thus it's not that Darwinism has been falsified or disconfirmed, but that we simply don't know enough about the biological system in question and its historical context to determine how the Darwinian mechanism might have produced it.”

William A. Dembski (1960) American intelligent design advocate

Is Intelligent Design Testable — A Response to Eugenie Scott
2011-01-24
The Golden Spiral
http://www.metanexus.net/magazine/tabid/68/id/2667/Default.aspx
2011-10-23
responding to Eugenie Scott's 2001-01-18 lecture at U.C. Berkeley, "Icons of Creationism: The New Anti-Evolutionism and Science"
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“According to the most influential twentieth-century philosopher of science, Karl Popper, a theory is scientific only in so far as it is falsifiable, and should be given up as soon as it has been falsified. By this standard, the theories of Darwin and Einstein should never have been accepted.”

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John Gray 164

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