Recommended quotes
page 34

Richard Rorty photo

“I do not believe that the present flowering of science is due in the least to a real appreciation of the beauty and intellectual discipline of the subject. It is due simply to the fact that power, wealth and prestige can only be obtained by the correct application of science.”

Derek Barton (1918–1998) English organic chemist

Derek Barton, Some Reflections on the Present Status of Organic Chemistry, in Science and Human Progress: Addresses at the Celebrations of the 50th Anniversary of the Mellon Institute (1963), 90.

Alan Turing photo

“The majority of them seem to be "sub-critical," i.e., to correspond in this analogy to piles of sub-critical size. An idea presented to such a mind will on average give rise to less than one idea in reply. A smallish proportion are super-critical. An idea presented to such a mind may give rise to a whole "theory" consisting of secondary, tertiary and more remote ideas.”

Alan Turing Computing Machinery and Intelligence

Source: Computing Machinery and Intelligence (1950), p. 454.
Context: Another simile would be an atomic pile of less than critical size: an injected idea is to correspond to a neutron entering the pile from without. Each such neutron will cause a certain disturbance which eventually dies away. If, however, the size of the pile is sufficiently increased, the disturbance caused by such an incoming neutron will very likely go on and on increasing until the whole pile is destroyed. Is there a corresponding phenomenon for minds, and is there one for machines? There does seem to be one for the human mind. The majority of them seem to be "sub-critical," i. e., to correspond in this analogy to piles of sub-critical size. An idea presented to such a mind will on average give rise to less than one idea in reply. A smallish proportion are super-critical. An idea presented to such a mind may give rise to a whole "theory" consisting of secondary, tertiary and more remote ideas. Animals minds seem to be very definitely sub-critical. Adhering to this analogy we ask, "Can a machine be made to be super-critical?"

Alan Turing photo

“I am not very impressed with theological arguments whatever they may be used to support. Such arguments have often been found unsatisfactory in the past.”

Alan Turing Computing Machinery and Intelligence

Source: Computing Machinery and Intelligence (1950), pp. 443-444.
Context: I am not very impressed with theological arguments whatever they may be used to support. Such arguments have often been found unsatisfactory in the past. In the time of Galileo it was argued that the texts, "And the sun stood still... and hasted not to go down about a whole day" (Joshua x. 13) and "He laid the foundations of the earth, that it should not move at any time" (Psalm cv. 5) were an adequate refutation of the Copernican theory.

Alan Turing photo

“The original question, 'Can machines think?' I believe to be too meaningless to deserve discussion.”

Alan Turing (1912–1954) British mathematician, logician, cryptanalyst, and computer scientist

Source: Mechanical Intelligence: Collected Works of A.M. Turing

Alan Turing photo

“Instruction tables will have to be made up by mathematicians with computing experience and perhaps a certain puzzle-solving ability. There need be no real danger of it ever becoming a drudge, for any processes that are quite mechanical may be turned over to the machine itself.”

Alan Turing (1912–1954) British mathematician, logician, cryptanalyst, and computer scientist

"Proposed Electronic Calculator" (1946), a report for National Physical Laboratory, Teddington; published in A. M. Turing's ACE Report of 1946 and Other Papers (1986), edited by B. E. Carpenter and R. W. Doran, and in The Collected Works of A. M. Turing (1992), edited by D. C. Ince, Vol. 3.

Alan Turing photo
Alan Turing photo

“A man provided with paper, pencil, and rubber, and subject to strict discipline, is in effect a universal machine.”

Alan Turing Intelligent Machinery

"Intelligent Machinery: A Report by A. M. Turing," (Summer 1948), submitted to the National Physical Laboratory (1948) and published in Key Papers: Cybernetics, ed. C. R. Evans and A. D. J. Robertson (1968) and, in variant form, in Machine Intelligence 5, ed. B. Meltzer and D. Michie (1969).

Alan Turing photo
Alan Turing photo
Alan Turing photo

“The Exclusion Principle is laid down purely for the benefit of the electrons themselves, who might be corrupted (and become dragons or demons) if allowed to associate too freely.”

Alan Turing (1912–1954) British mathematician, logician, cryptanalyst, and computer scientist

Epigram to Robin Gandy (1954).

Alan Turing photo
Alan Turing photo
Alan Turing photo

“Those who can imagine anything, can create the impossible.”

Alan Turing (1912–1954) British mathematician, logician, cryptanalyst, and computer scientist

Alan Turing photo

“If a machine is expected to be infallible, it cannot also be intelligent.”

Alan Turing (1912–1954) British mathematician, logician, cryptanalyst, and computer scientist

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