Simon Blackburn on Popper. From the sidelines:)

Simon Blackburn, The Big Questions: Philosophy, Quercus, London,2009.

In the chapter What Do We Know? Virtual realities and reliable authorities.

One of the most influential views of our situation as theorists is that of Karl Popper, famous for his deliniation of scientific method as that of bold conjectures, followed by severe testing. The theories that emerge are those that have survived in a kind of Darwinian process that weeds out competing theories. Popper himself had no very satisfactory theory of testing: at some points he seemed to think that it was a conventional matter whether you described a test as having refuted a theory at all. This was a consequence of another aspect of his views, which was that nobody could ever be justified in holding a theory other than provisionally, on hold as it were for yet more testing. Continue reading

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Unsatisfactory introductions

I have  been perplexed over the years by the number of times that I have read and heard views attributed to Popper which don’t sound quite the same as the ideas of the man himself,  at least as I understood him.

This prompted some questions about what was being taught to undergraduates and in 1989 I surveyed the undergraduate courses and reading lists in Philosophy, Politics and Sociology in the (then) 21 Australian universities. The objective was to find what they were being told about Popper and Hayek who I regarded as the twin pillars of anti-scientism and classical liberalism. (That was before I discovered Mises. Due to Popper’s favourable references to Hayek I explored the books of  latter but did not find in Hayek the kind of references to Mises that would have prompted me to pursue his books.) Getting back to my survey, the short answer is that you had to be very lucky to get more than a passing reference to Popper and the situation with Hayek was worse. Continue reading

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Ayer on Justification

But this is very strange. For what would be the point of our testing our hypotheses at all if they earned no greater credibility by passing the tests? It is not  just a matter of our abiding by the rules of a game. We seek justification for our beliefs, and the whole process of testing would be futile if it were not thought capable of providing it.

Philosophy in the Twentieth Century, page 134.

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Situational logic in The Poverty of Historicism

My summary of The Poverty of Historicism does not adequately cover the last few sections, probably because there was a rush to finish and get on with some other tasks. The sections are:

31 Situational logic in history and 32 The institutional theory of progress

Alan Donagan, in the Shilpp volume on Popper, wrote that “the results of Popper’s examination of historicism were not all nevative. His exploration…led directly to two positive conclusions of great  importance, the theory of situational logic in history, and the institutional theory of progress.” Continue reading

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Hulsmann on Mises

Jorg Guido Hulsmann, professor of economics at the University of Angiers in France has written a magesterial biography of Ludwig von Mises, running over 1100 pages. This allows sufficient space to permit generous coverage of  the historical and intellectual background with close attention to his major works and the salient features of his life and social relations. Continue reading

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Review: Popper, Otto Selz and the Rise of Evolutionary Epistemology by Michel ter Hark

In “Popper, Otto Selz and the Rise of Evolutionary Epistemology” by Michel ter Hark argues that many of Popper’s ideas about evolutionary epistemology were inspired by the writings of the psychologist Otto Selz. Far from being a later add on evolutionary epistemology was important in Popper’s philosophy from the start. Also, despite Popper’s claims that he came up with some of his ideas as early as 1919, he was still an inductivist as late as 1928. Who is Otto Selz? I hear you cry. He was a psychologist who proposed not only that people and animals decide what to do by trying out ideas and rejecting them if they don’t work out, but also said that science works that way. Popper’s contribution was to use these ideas to come up with a new epistemology. Michel ter Hark explains all this much better than I just did with lots of quotes and historical context, and if you want to know about it you should read the book.

A quick critical comment: on p. 152, ter Hark argues that Popper’s epistemology rests on his psychology rather than the other way around. I am not convinced that this is true, for if all I had was the theory that people do in fact create knowledge through conjectures and criticism, I could still say “but really they ought to create knowledge by induction.” But if I have a logical argument to the effect that this is impossible I can no longer make that argument. So it seems to me that having good psychology is dependent on having good epistemology rather than the other way around.

Something good about the book: Chapter 6 prompted me to have another look at “The Self and Its Brain” (co-written with neuroscientist John Eccles) in which Popper allegedly endorsed Cartesian dualism according to philosophical legend. Actually, his position is a lot less clear than that, not least because he states at the start of the book that he is not offering an ontology, and also because in Section 48 he explicitly trashes Descartes’ theory of mind. Popper sometimes endorses a dualist position as when he critically discusses Ryle’s book “The Concept of Mind”, saying that if Ryle disagrees with the two worlds theory (the physical and mental worlds) presumably the three worlds theory is even worse, but he is not a Cartesian dualist. (Popper’s three worlds are the physical world, the world of mental states and the world of objective knowledge.) As ter Hark points out, the question of the merits and problems of Popper’s philosophy of mind should be re-examined.

“Popper, Otto Selz and the Rise of Evolutionary Epistemology” by Michel ter Hark is historically interesting and philosophically provocative.

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Popper as a Conservative or Libertarian

Continuum Press is producing a series of books about Major Conservative and Libertarian Thinkers, edited by John Meadowcroft of Kings College, London. Twenty volumes are planned and the fourteenth is on Karl Popper, written by Phil Parvin.

The full list

The Salamanca School by Alves and Moreira,  Thomas Hobbes by R E R Bunce, John Locke by Eric Mack, David Hume by Christopher J Berry, Adam Smith by James Otteson, Edmund Burke by Dennis O’Keefe, Alexis de Tocqueville by Alan S Kahan, Herbert Spencer by Alberto Mingardi, Ludwig von Mises by Richard Ebeling, Joseph Schumpater by Adam Tebble, Michael Oakeshott by Edmund Neill, Karl Popper by Phil Parvin, Ayn Rand by Mimi Gladstein, Milton Friedman by William Ruger, Russell Kirk by John Paffard, James Buchanan by John Meadowcroft, The Modern Papacy by Samuel Gregg, Murray Rothbard by Gerard Casey and Robert Nozick by Ralf Bader.

The editor notes that Popper does not fit easily into the category of conservative or libertarian, partly due to the nuances in his thinking and partly due to shifts in his position since The Open Society and its Enemies appeared in 1945. Others in the series include Hayek and Buchanan who both rejected the “conservative” label and the aim of the project is to demonstrate that conservatism does not have to be merely reactive and libertarianism does not have to be a vehicle for self-interest or anarchism.

Parvin has packed a lot into a small book, with chapters on Popper’s intellectual biography; his leading ideas in epistemology, politics and the social sciences; the reception of his ideas on politics; and their contemporary relevance.

Continue reading

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David Deutsch on Respect for Right and Wrong

From the Taking Children Seriously email list (now located here)

Someone wrote on 17/1/01 7:10 pm:

Earlier I wrote asking about the TCS understanding of the word coercion.I appreciate all the comments that came back and I think I have a better understanding of the TCS position on the subject. I have another question that concerns teaching respect for other peoples property. As an older American I have a healthy respect for the rights of people to own and protect personal property. My son and his wife have adopted the TCS ideas of raising children which is fine because its their right and their children and I agree that children are people too.

My question is, how does TCS philosophy teach respect for other peoples property and rights. An example: my son lets his girls, one six and one two, mark on the walls, carpet,etc.,with most any kind of marker. Not just in one room but all over the house. If the house was theirs it would be one thing but they rent. The house belongs to someone else. When they move the owner will have to go to considerable expense to repaint the entire inside of the house and replace carpet. By the way I do not allow my grandchildren to do this or jump on my furniture like a trampoline when they are at my house. How does TCS suggest teaching attitudes of respect for other peoples rights and property?

I really want to understand.

I think there’s something important missing from your conception of respect for property, and of how one acquires respect for property and morality generally. What’s missing is respect for the distinction between right and wrong. That’s ironic because I guess you perceive exactly that lack in TCS.

How can that be? Because the rights and wrongs of *allowing* (and forbidding), though important, are actually only a small part of morality. To mistake them for the whole thing leads to a mere parody of morality, and hence, often, to very bad behaviour.

Take the issue of bouncing on the furniture. Any of the other examples you gave would do equally well: what matters is that there are two people involved, with at least two conflicting initial preferences about what should be done to a piece of property. Where the two people are enemies, where they hate each other’s guts, where they are irrational to the point of inability to function, where they are trapped in compulsive, self-destructive patterns of behaviour — *then* indeed all other considerations usually fall away, and the moral analysis reduces simply to: *what does the owner of the furniture want?* At the other end of the scale, where the disputants know each other well, and like each other, and see themselves as on the same side, and are jointly pursuing the truth and want to do right and avoid wrong, then as I said the issue of whose furniture it is still plays an important role, but not the fundamental one. Under these circumstances the fundamental thing is not whether the owner wants the bed to be bounced on or not but *whether bouncing on it is the right thing to do or not*.

But doesn’t the right thing to do *depend* on what the owner wants? Of course. But do you see that as a means of finding out what’s right, this is completely without content in cases where what the owner wants is itself *to do the right thing with the furniture*. And do you see that it is a sufficient means of finding out what’s right only in cases where all parties have immutable wants and no one gives a toss about what’s right and what’s wrong?

The thing is, there’s a right use for that furniture. It may involve bouncing, and it may not. I happen to think that it almost certainly does, but that’s irrelevant here. The point is only that different people’s preferences in this matter are *conjectures* about what that right use may be.

Some people believe that no such truth of the matter exists. They believe that all that exists are the two conflicting preferences, which in this context they often call the ‘interests’ of the parties, and which they take for granted are immutable, indeed sacred. They do not consider these preferences to be moral conjectures, but infallible statements of fact. They are denying the existence of a substantive moral issue, and thereby immunise from all criticism the particular moral stance that they implicitly take (and wish to enforce on others). That is why I regard such people as not respecting — indeed as denying — the distinction between right and wrong.

Once you understand that in every human dispute there’s a substantive issue at stake, and an objective truth of the matter, but that there exists no mechanical means of choosing which, if any, of the disputants is closer to that truth, but that creativity and criticism are capable of eliminating moral errors and getting closer to that truth, then you immediately see why inculcating any mechanical rule of behaviour, even ‘respect for property’, cannot be morally right and cannot form any part of a genuine moral education. Popper taught us that in politics, “who should rule, and what policy should be implemented?” is never as important as “how can we remove bad rulers and reverse bad policies?”. For exactly the same reason, the purpose of family institutions ought to be to allow disputing parties jointly to discover the truth of the matter, which will in general involve both changing their preferences and creating new options, and not to entrench or ‘respect’ the chimera of a predetermined rule for choosing among existing options — a rule that will always be doing right, by definition, no matter who gets hurt.

— David Deutsch

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You Tube 1

I have made some You Tube videos on critical rationalism, probability and logic.

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Popper on epistemological naturalism

This is a quote from Popper in Logic of Scientific Discovery, Section 10:

This view, according to which methodology is an empirical science in its turn—a study of the actual behaviour of scientists, or of the actual procedure of ‘science’—may be described as ‘naturalistic’. A naturalistic methodology (sometimes called an ‘inductive theory of science’ has its value, no doubt. A student of the logic of science may well take an interest in it, and learn from it. But what I call ‘methodology’ should not be taken for an empirical science. I do not believe that it is possible to decide, by using the methods of an empirical science, such controversial questions as whether science actually uses a principle of induction or not. And my doubts increase when I remember that what is to be called a ‘science’ and who is to be called a ‘scientist’ must always remain a matter of convention or decision.

I believe that questions of this kind should be treated in a different way. For example, we may consider and compare two different systems of methodological rules; one with, and one without, a principle of induction. And we may then examine whether such a principle, once introduced, can be applied without giving rise to inconsistencies; whether it helps us; and whether we really need it. It is this type of inquiry which leads me to dispense with the principle of induction: not because such a principle is as a matter of fact never used in science, but because I think that it is not needed; that it does not help us; and that it even gives rise to inconsistencies.

Thus I reject the naturalistic view. It is uncritical. Its upholders fail to notice that whenever they believe themselves to have discovered a fact, they have only proposed a convention. Hence the convention is liable to turn into a dogma. This criticism of the naturalistic view applies not only to its criterion of meaning, but also to its idea of science, and consequently to its idea of empirical method.

Naturalism, sadly, is not yet dead. Possibly the most popular modern form of naturalism is Bayesian epistemology, which claims that some kind of probabilistic form of induction with personal probabilities is how science “really works”. Is this supposed to mean that science can make a theory more likely by observation? Or is it supposed to imply that it is a fact of psychology that people attribute more probability to well-tested theories? Either claim would be false. Observations do not imply the truth of theories that correctly predict those observations, nor do they make such theories more probable since a theory is either true or false. Neither science nor the human brain has the miraculous ability to break the laws of logic.

See also my earlier post on Six Varieties of Inductivism.

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