Author Archives: Alan Forrester

Knowledge and Biology

Many people I have discussed Popper with seem confused by Popper tying together evolution and epistemology in his book Objective Knowledge and other places. Evolution, they say, is all about biology and epistemology is about what people think. I’m going to try to clear up this confusion. Continue reading

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On Obviousness

One criticism that I often read of Popper is that some ideas are just obvious, and so there is no need to take all this fallibilist stuff too seriously. As an example, people often say 1+1 = 2 is obvious … Continue reading

Posted in epistemology | 4 Comments

Essentialism

Anti-essentialism is a Popperian idea that many people are either unaware of or do not understand.  Many people are essentialists, particularly people who think they understand philosophy, but essentialism is a bad mistake. There are two separate ideas that Popper … Continue reading

Posted in epistemology, essentialism, science | 4 Comments

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

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

Posted in biology, epistemology, evolution, logic, science | 61 Comments

You Tube 1

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

Posted in epistemology, logic | 6 Comments

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 … Continue reading

Posted in epistemology, logic, quote, science | 1 Comment

Essentialism vs freedom

Michael Sandel gives an interesting TED Talk on democracy, saying that we should talk more about the deep moral convictions people have to raise the level of debate in democracy. This may be a good idea, but unfortunately his argument … Continue reading

Posted in essentialism, ethics, open society | 1 Comment

Proportional Representation and the Open Society

In The Open Society and Its Enemies, Karl Popper criticised the idea that political philosophy should be about the question of who should rule. Any person or group is fallible, so the question “Who should rule?” begs for a false … Continue reading

Posted in open society | 3 Comments

Review: Beyond Wittgenstein’s Poker by Peter Munz

I think it can safely be said that Popper and Wittgenstein didn’t like each other much and that their dedicated followers have not shown much interest in overcoming this dislike. Peter Munz makes an attempt to heal this breach in … Continue reading

Posted in epistemology, essentialism | 2 Comments

Criticism of Salmon on Popper

Wesley Salmon wrote a critique of critical rationalism in which he claimed this it could not explain why it is rational to use the predictions of scientific theories to help us make decisions. First, note that Salmon does not and … Continue reading

Posted in epistemology, logic, science | 68 Comments