19378
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Early modern possibility is what occurs sometime; for Leibniz, it is what is not contradictory [Arthur,R]
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Full Idea:
For Descartes, Hobbes and Spinoza, if a state of things is possible, it must occur at some time, whether past, present or future. For Leibniz possibility makes no reference to time; an individual is possible if its concept contains no contradiction.
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From:
Richard T.W. Arthur (Leibniz [2014], 4 'Contingent')
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A reaction:
It has always struck me as fallacious to say that anything that is possible must at some time occur. If '6' is possible on the die, what will constrain it to eventually come up when thrown? Mere non-contradiction doesn't imply possibility either.
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7517
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I could take a healthy infant and train it up to be any type of specialist I choose [Watson,JB]
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Full Idea:
Give me a dozen healthy infants, and my own specified world to bring them up in, and I'll guarantee to take any one at random and train him to become any type of specialist I might select - doctor, artist, beggar, thief - regardless of his ancestry.
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From:
J.B. Watson (Behaviorism [1924], Ch.2), quoted by Steven Pinker - The Blank Slate
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A reaction:
This was a famous pronouncement rejecting the concept of human nature as in any way fixed - a total assertion of nurture over nature. Modern research seems to be suggesting that Watson is (alas?) wrong.
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