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7 " The difficulties connected with my criterion of demarcation (D) are important, but must not be exaggerated. It is vague, since it is a methodological rule, and since the demarcation between science and nonscience is vague. But it is more than sharp enough to make a distinction between many physical theories on the one hand, and metaphysical theories, such as psychoanalysis, or Marxism (in its present form), on the other. This is, of course, one of my main theses; and nobody who has not understood it can be said to have understood my theory.

The situation with Marxism is, incidentally, very different from that with psychoanalysis. Marxism was once a scientific theory: it predicted that capitalism would lead to increasing misery and, through a more or less mild revolution, to socialism; it predicted that this would happen first in the technically highest developed countries; and it predicted that the technical evolution of the 'means of production' would lead to social, political, and ideological developments, rather than the other way round.

But the (so-called) socialist revolution came first in one of the technically backward countries. And instead of the means of production producing a new ideology, it was Lenin's and Stalin's ideology that Russia must push forward with its industrialization ('Socialism is dictatorship of the proletariat plus electrification') which promoted the new development of the means of production.

Thus one might say that Marxism was once a science, but one which was refuted by some of the facts which happened to clash with its predictions (I have here mentioned just a few of these facts).

However, Marxism is no longer a science; for it broke the methodological rule that we must accept falsification, and it immunized itself against the most blatant refutations of its predictions. Ever since then, it can be described only as nonscience—as a metaphysical dream, if you like, married to a cruel reality.

Psychoanalysis is a very different case. It is an interesting psychological metaphysics (and no doubt there is some truth in it, as there is so often in metaphysical ideas), but it never was a science. There may be lots of people who are Freudian or Adlerian cases: Freud himself was clearly a Freudian case, and Adler an Adlerian case. But what prevents their theories from being scientific in the sense here described is, very simply, that they do not exclude any physically possible human behaviour. Whatever anybody may do is, in principle, explicable in Freudian or Adlerian terms. (Adler's break with Freud was more Adlerian than Freudian, but Freud never looked on it as a refutation of his theory.)

The point is very clear. Neither Freud nor Adler excludes any particular person's acting in any particular way, whatever the outward circumstances. Whether a man sacrificed his life to rescue a drowning, child (a case of sublimation) or whether he murdered the child by drowning him (a case of repression) could not possibly be predicted or excluded by Freud's theory; the theory was compatible with everything that could happen—even without any special immunization treatment.

Thus while Marxism became non-scientific by its adoption of an immunizing strategy, psychoanalysis was immune to start with, and remained so. In contrast, most physical theories are pretty free of immunizing tactics and highly falsifiable to start with. As a rule, they exclude an infinity of conceivable possibilities. "

Karl Popper

14 " Your Eve was wise, John. She knew that Paradise would make her mad, if she were to live forever with Adam and know no other thing but strawberries and tigers and rivers of milk. She knew they would tire of these things, and each other. They would grow to hate every fruit, every stone, every creature they touched. Yet where could they go to find any new thing? It takes strength to live in Paradise and not collapse under the weight of it. It is every day a trial. And so Eve gave her lover the gift of time, time to the timeless, so that they could grasp at happiness.
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And this is what Queen Abir gave to us, her apple in the garden, her wisdom--without which we might all have leapt into the Rimal in a century. The rite bears her name still. For she knew the alchemy of demarcation far better than any clock, and decreed that every third century husbands and wives should separate, customs should shift and parchmenters become architects, architects farmers of geese and monkeys, Kings should become fishermen, and fishermen become players of scenes. Mothers and fathers should leave their children and go forth to get other sons and daughters, or to get none if that was their wish. On the roads of Pentexore folk might meet who were once famous lovers, or a mother and child of uncommon devotion--and they would laugh, and remember, but call each other by new names, and begin again as friends, or sisters, or lovers, or enemies. And some time hence all things would be tossed up into the air once more and land in some other pattern. If not for this, how fastened, how frozen we would be, bound to one self, forever a mother, forever a child. We anticipate this refurbishing of the world like children at a holiday. We never know what we will be, who we will love in our new, brave life, how deeply we will wish and yearn and hope for who knows what impossible thing!
Well, we anticipate it. There is fear too, and grief. There is shaking, and a worry deep in the bone.
Only the Oinokha remains herself for all time--that is her sacrifice for us.
There is sadness in all this, of course--and poets with long elegant noses have sung ballads full of tears that break at one blow the hearts of a flock of passing crows! But even the most ardent lover or doting father has only two hundred years to wait until he may try again at the wheel of the world, and perhaps the wheel will return his wife or his son to him. Perhaps not. Wheels, and worlds, are cruel.
Time to the timeless, apples to those who live without hunger. There is nothing so sweet and so bitter, nothing so fine and so sharp. "

Catherynne M. Valente , The Habitation of the Blessed (A Dirge for Prester John, #1)