Questions related to the philosophical work of Sir Karl Popper.

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Semantics of Popper's Demarcation criterion - what is included within “Science”?

Popper claims that falsifiability is a criterion of science (but not of meaningfulness). Scanning the original 1935 text (Logik der Forschung) it seems to me that he just refers to "Wissenschaft". ...
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Evolution and Popperian falsifiability

According to Karl Popper's falsification criterion only a falsifiable theory is said to be a scientific theory. If this is true, is Evolution Theory falsifiable and hence considered scientific?
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123 views

What is wrong with Popper's theory of falsification? [duplicate]

Popper popularized the notion that empirical science can not be verified, only falsified. Isn't he right? How can someone verify a theory? To me, it does not seem possible. However, you can easily ...
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4answers
254 views

A proposition is non-falsifiable. So what?

Does Karl Popper argue that non-falsifiable theories are not true/have no truth value, or simply that they are not provable? Put another way: according to Popper, could a non-falsifiable theory ...
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5answers
160 views

Does anyone argue that Karl Popper's theory of critical rationalism does not meet its own conditions?

I am a huge fan of Dr. Popper's work, and particularly his theory that the property of falsifiability separates the scientific from the non-scientific. However, it struck me that this theory does not ...
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1answer
117 views

Popper, Nietzsche and knowledge

In many works of Karl Popper, he says, quoting Xenophanes, that all human knowledge is only conjectural, that modern science will never produce a true knowledge. The german philosopher, Friedrich ...
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36 views

Karl Popper critiques to historical relativism

In his book "In Search of a Better World", Popper says that he already have argued against historical and social relativism in other works. What are these others works?
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Other terms for Popper's “metaphysical research program”

Are there synonyms or alternative terms for Poppers "metaphysical research program"? This seems like a useful concept for practicing scientists, but telling them that their work isn't "true" science ...
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1answer
64 views

Can we have a theory of the colour blue in a Popperian sense?

Saussure in his theory of signs declared that there was no necessary connection between the semantic value of a word and its phonetic sign: the sign 'dog' signifies the physical dog, but in principle ...
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66 views

Is medicine falsifiable?

Would modern medicine be falsifiable according to Popper? What about alternative medicine, such as homeopathy? My problem with this, is that I imagine such falsification depends on double blind ...
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1answer
132 views

Why are Popper's basic statements not justifiaible by experience?

In his Logik der Forschung Popper writes that basic statements are not justifiable by our immediate experiences, but are … accepted by an act, a free decision (LSD, 109) The SEP entry on Popper ...
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Can we measure the effort to create a mathematical theory in terms of energy?

Sir Karl Popper says that products of our mind, like speech, music, math,... are things on their own. We create them. We put effort in them. I wonder where the difference of creating these things, is ...
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Can information be thought without a physical realisation?

Thoughts, memories, information, all are stored in some kind of physical representation. You might get down to a single quantum state of a electron to store one (quantum) bit. Sir Popper tells us that ...
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1answer
102 views

Is Popper the only one who discusses the “oracular philosophy”?

I did not find other reading apart from "Open society and its enemies", but it's difficult for me to believe that Popper was the first and the last one who paid attention to this phenomenon. Popper ...
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1answer
193 views

Is Poppers criticism of Kant valid?

Hume applying rationality to causality showed that it could not exist - the question is then how does it exist. Kants reply was to place it in the mind. Popper discusses this in his *Conjectures & ...
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529 views

Does Poppers theory of Falsification apply to mathematics?

Mathematics is generally & popularly judged a science in the basic duality: science - humanities. As enemies and collaborationists. The border heavily & fiercely policed. However, it seems to ...
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3answers
492 views

Positive vs. Normative--Is falsification required?

I have some confusion on positive vs. normative. I am under the impression that a positive claim is a claim regarding a state of reality, while a normative claim is one of a value judgment on ...
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1answer
457 views

How does Popper overcome this critique?

Suppose P and Q are falsifiable theories (in the Popperian sense). Then it seems to me that 'P and Q' is a falsifiable theory (we can refute it by refuting A, or by refuting B), and so too is 'P or Q' ...
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Is Poppers Solution to the Problem of Induction still valid?

Popper (negativly) solved the problem of induction by showing that there is no class of sentences (analytic/synthetic, a priori/a posteriori) in which a principle of induction can be phrased without ...
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756 views

A Popper question about corroboration

From http://en.wikipedia.org/wiki/Problem_of_induction#Karl_Popper The rational motivation for choosing a well-corroborated theory is that it is simply easier to falsify: Well-corroborated means ...
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Was Karl Popper a “dedicated opponent of all forms of scepticism”? If so, why, or how?

While reading the Wikipedia article on Karl Popper, I was surprised to find that one of the article's sources, in its lede paragraph, claims that Karl Popper was a "dedicated opponent of all forms of ...
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1answer
281 views

Does going from a singular to existential statement make it non-scientific for Popper?

In "The Logic of Scientific Discovery" (section 15) Popper argues that an 'isolated' (a term he introduced in the English translation, which seems to be used in a very vague way) purely existential ...
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Relation of Gödel's incompleteness theorems and Karl Popper falsification

Falsifiability is considered a positive (and often essential) quality of a hypothesis because it means that the hypothesis is testable by empirical experiment and thus conforms to the standards ...
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686 views

Why do we need a reason for believing that inductive method is necessarily true?

I've been a bit perplexed about the "problem" of induction. Hume challenges other philosophers to come up with a deductive reason for the inductive connection. If the justification of induction ...
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932 views

If we can falsify hypothesis, cant we verify them by falsifying their negation?

Some people argue that we can not verify hypothesis but we can falsify them? I believe we can usually negate statements. So, if we can falsify statements, why cant we verify statements by falsifying ...
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Why does Popper think there are no a priori synthetic statements?

Lately I´ve been reading Poppers "Logic of Scientific Discovery" and I am especially interested in his critics of induction as a scientific method. When he trys to show that a principle of induction ...
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A good critique of Popper's “The Open Society and Its Enemies”

Can you recommend a good reference to answer the critiques in Popper's "The Open Society and Its Enemies"? I am especially interested in responses to the Marx section of the book.
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Modern responses to Popper's theory-laden observation

One of the most appealing parts of Karl Popper's philosophy for me is the idea of theory-laden observation. To provide an unjust summary: whenever you are making an observation-statement to question ...
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870 views

Is a theory that can only be disproved with an infeasable test still scientific?

If I understand Karl Popper's reasoning correctly, a theory is 'scientific' if there can be devised a test that tries to disprove it; i.e., it must be falsifiable. Now, imagine a theory that ...
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601 views

Does Karl Popper's work address the Principle of Uniformity of Nature?

It seems to me that Popper's solution does not address the more difficult problem of induction that Hume calls the Principle of Uniformity of Nature. In other words, we might find evidence against a ...
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What basis do we have for certainty in current scientific theories?

Given there is much past scientific belief that we now know NOT to be true, what basis do we have for the seemingly increasing certainty in our scientific beliefs held today being true? On the one ...
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736 views

What's the relevance of falsifiability in regards to logical arguments?

Is it reasonable to classify logical propositions that rely on deduction and are non-falsifiable as being inherently not worthy pursuing or does this just applies to inductive reasoning?