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Some types of philosophical skepticism reject all forms of knowledge while others limit this rejection to certain fields, for example, knowledge about moral doctrines or about the external world. Some theorists criticize philosophical skepticism based on the claim that it is a self-refuting idea since its proponents seem to claim to know that ...
Cartesian doubt is a form of methodological skepticism associated with the writings and methodology of René Descartes (March 31, 1596–February 11, 1650). [1] [2]: 88 Cartesian doubt is also known as Cartesian skepticism, methodic doubt, methodological skepticism, universal doubt, systematic doubt, or hyperbolic doubt.
The unexamined life is not worth living" is a famous dictum supposedly uttered by Socrates at his trial for impiety and corrupting youth, for which he was subsequently sentenced to death. The dictum is recorded in Plato's Apology (38a5–6) as ho dè anexétastos bíos ou biōtòs anthrṓpōi (but the unexamined life is not lived by man) ( ὁ ...
For example, the statement "If Joseph Swan had not invented the modern incandescent light bulb, then someone else would have invented it anyway" is a counterfactual, because, in fact, Joseph Swan invented the modern incandescent light bulb. The most immediate task concerning counterfactuals is that of explaining their truth-conditions.
Skepticism, also spelled scepticism in British English, is a questioning attitude or doubt toward knowledge claims that are seen as mere belief or dogma. [1] For example, if a person is skeptical about claims made by their government about an ongoing war then the person doubts that these claims are accurate.
Doubt is a mental state in which the mind remains suspended between two or more contradictory propositions, and is uncertain about them. [1] [better source needed] Doubt on an emotional level is indecision between belief and disbelief.
Radical skepticism (or radical scepticism in British English) is the philosophical position that knowledge is most likely impossible. [1] Radical skeptics hold that doubt exists as to the veracity of every belief and that certainty is therefore never justified.
For example, oxygen is necessary for fire. But one cannot assume that everywhere there is oxygen, there is fire. A condition X is sufficient for Y if X, by itself, is enough to bring about Y. For example, riding the bus is a sufficient mode of transportation to get to work.