Falsifiability is a deductive standard of evaluation of scientific theories and hypotheses, introduced by the philosopher of science Karl Popper in his book The Logic of Scientific Discovery (1934). A theory or hypothesis is falsifiable if it can be logically contradicted by an empirical test.
Sir Karl Raimund Popper was an Austrian–British philosopher, academic and social commentator. One of the 20th century's most influential philosophers of science, Popper is known for his rejection of the classical inductivist views on the scientific method in favour of empirical falsification. According to Popper, a theory in the empirical sciences can never be proven, but it can be falsified, meaning that it can be scrutinised with decisive experiments. Popper was opposed to the classical justificationist account of knowledge, which he replaced with critical rationalism, namely "the first non-justificational philosophy of criticism in the history of philosophy".
Rationalism is a philosophical position, theory, or view that reason is the source of knowledge.
First formulated by David Hume, the problem of induction questions our reasons for believing that the future will resemble the past, or more broadly it questions predictions about unobserved things based on previous observations. This inference from the observed to the unobserved is known as "inductive inferences". Hume, while acknowledging that everyone does and must make such inferences, argued that there is no non-circular way to justify them, thereby undermining one of the Enlightenment pillars of rationality.
Critical rationalism is an epistemological philosophy advanced by Karl Popper on the basis that, if a statement cannot be logically deduced, it might nevertheless be possible to logically falsify it. Following Hume, Popper rejected any inductive logic that is ampliative, i.e., any logic that can provide more knowledge than deductive logic. This led Popper to his falsifiability criterion.
The Open Society and Its Enemies is a work on political philosophy by the philosopher Karl Popper, in which the author presents a "defence of the open society against its enemies", and offers a critique of theories of teleological historicism, according to which history unfolds inexorably according to universal laws. Popper indicts Plato, Hegel, and Marx for relying on historicism to underpin their political philosophies.
Hans Albert was a German philosopher. He was professor of social sciences at the University of Mannheim from 1963, and remained at the university until 1989. His fields of research were social sciences and general studies of methods. He was a critical rationalist, paying special attention to rational heuristics. Albert was a strong critic of the continental hermeneutic tradition coming from Heidegger and Gadamer.
William Warren Bartley III, known as W. W. Bartley III, was an American philosopher specializing in 20th century philosophy, language and logic, and the Vienna Circle.
David William Miller is an English philosopher and prominent exponent of critical rationalism. He taught in the Department of Philosophy at the University of Warwick in Coventry, UK. where he is Reader in Philosophy. He has been Honorary Treasurer of the British Society for the Philosophy of Science.
Originally, fallibilism is the philosophical principle that propositions can be accepted even though they cannot be conclusively proven or justified, or that neither knowledge nor belief is certain. The term was coined in the late nineteenth century by the American philosopher Charles Sanders Peirce, as a response to foundationalism. Theorists, following Austrian-British philosopher Karl Popper, may also refer to fallibilism as the notion that knowledge might turn out to be false. Furthermore, fallibilism is said to imply corrigibilism, the principle that propositions are open to revision. Fallibilism is often juxtaposed with infallibilism.
In epistemology, the Münchhausen trilemma is a thought experiment intended to demonstrate the theoretical impossibility of proving any truth, even in the fields of logic and mathematics, without appealing to accepted assumptions. If it is asked how any given proposition is known to be true, proof in support of that proposition may be provided. Yet that same question can be asked of that supporting proof, and any subsequent supporting proof. The Münchhausen trilemma is that there are only three ways of completing a proof:
Panrationalism holds two premises true:
- A rationalist accepts any position that can be justified or established by appeal to the rational criteria or authorities.
- He accepts only those positions that can be so justified.
Alan Edward Musgrave is an English-born New Zealand philosopher.
The positivism dispute was a political-philosophical dispute between the critical rationalists and the Frankfurt School in 1961, about the methodology of the social sciences. It grew into a broad discussion within German sociology from 1961 to 1969. The naming itself is controversial, since it was the Frankfurt School proponents who accused the critical rationalists of being positivists—while the latter considered themselves to be opponents of positivism.
Epistemology or theory of knowledge is the branch of philosophy concerned with the nature and scope (limitations) of knowledge. It addresses the questions "What is knowledge?", "How is knowledge acquired?", "What do people know?", "How do we know what we know?", and "Why do we know what we know?". Much of the debate in this field has focused on analyzing the nature of knowledge and how it relates to similar notions such as truth, belief, and justification. It also deals with the means of production of knowledge, as well as skepticism about different knowledge claims.
Hans-Joachim Niemann, is a German philosopher and PhD chemist, who has become known especially as a translator and editor of works by Karl Popper, including first editions and first translations. As a scholarly writer, he first published scientific papers, then many essays and several books on Karl Popper's philosophy and Critical Rationalism, including a 400-page Lexicon of Critical Rationalism. His Popper studies helped to establish Karl Popper as a major ethicist and as an important biophilosopher.
Explanatory power is the ability of a hypothesis or theory to explain the subject matter effectively to which it pertains. Its opposite is explanatory impotence.
John William Nevill Watkins was an English philosopher, a professor at the London School of Economics from 1966 until his retirement in 1989 and a prominent proponent of critical rationalism.
Pseudorationalism was the label given by economist and philosopher Otto Neurath to a school of thought that he was heavily critical of, which relies on an erroneous vision of the process of thinking and moral action. He made these criticisms throughout many of his writings, but primarily in his 1913 paper "The lost wanderers of Descartes and the auxiliary motive" and later to a lesser extent in his 1935 "Pseudorationalismus der Falsifikation".
Critical Rationalism: A Restatement and Defence (1994) is a book on the philosophy of science by the philosopher David Miller. Book reviews include those of John Watkins in the British Journal for the Philosophy of Science and Michael Redhead in Analytic Philosophy. The book seeks to restate and extend the epistemology of Karl Popper, whose general philosophy has been termed 'critical rationalism'.
