Skepticism

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Skepticism in Western philosophy, is the attitude of doubting knowledge claims set forth in various areas. Skeptics have challenged the adequacy or reliability of these claims by asking what principles they are based upon or what they actually establish. They have questioned whether some such claims really are, as alleged, indubitable or necessarily true, and they have challenged the purported rational grounds of accepted assumptions. In everyday life, practically everyone is skeptical about some knowledge claims; but philosophical skeptics have doubted the possibility of any knowledge beyond that of the contents of directly felt experience. The original Greek meaning of skeptikos was “an inquirer,” someone who was unsatisfied and still looking for truth.

From ancient times onward skeptics have developed arguments to undermine the contentions of dogmatic philosophers, scientists, and theologians. The skeptical arguments and their employment against various forms of dogmatism have played an important role in shaping both the problems and the solutions offered in the course of Western philosophy. As ancient philosophy and science developed, doubts arose about various basic, widely accepted beliefs about the world. In ancient times, skeptics challenged the claims of Plato and Aristotle and their followers, as well as those of the Stoics; and during the Renaissance similar challenges were raised against the claims of Scholasticism and Calvinism. In the 17th century, skeptics attacked Cartesianism (the system established by the French philosopher and mathematician René Descartes) along with other theories that attempted to justify the scientific revolution initiated by Copernicus, Kepler, and Galileo. Later, a skeptical offensive was leveled against the Enlightenment philosopher Immanuel Kant and then against the philosophical idealist Georg Wilhelm Friedrich Hegel and his followers. Each challenge led to new attempts to resolve the skeptical difficulties. Skepticism, especially since the Enlightenment, has come to mean disbelief — primarily religious disbelief — and the skeptic has often been likened to the village atheist.


v · d Science
v · d General science
Scientific method   Scientific theory · Hypothesis · Evidence · Examining claims · Skepticism
Scientific Disciplines   Physics · Biology · Chemistry · Psychology · Medical Science · Mathematics
History of science   Library of Alexandria · Aristotle · Dark ages · Renaissance · The enlightenment · Heliocentrism · Newtonian physics · Darwinian evolution · Mendelian genetics · Relativity Theory · Quantum mechanics · Space exploration · Computer sciences · String theory
Champions of reason   Carl Sagan · Karl Kruszelnicki · Julius Sumner Miller · John Allan Paulos · James Randi
v · d Biology
Evolution   Overview of genetics · Genetic mutation · Hereditary change · Natural selection · Adaptation
Abiogenesis   Possible theories of abiogenesis · Building blocks of life · The Urey-Miller experiment
Evolutionary straw men   Life just exploded from nothing · So you think we came from monkeys · How did the first dog find a mate · Crocoducks · Banana argument · 747 Junkyard argument · Irreducible complexity · Chuck Missler's jar of peanut butter · What good is half a wing?
Notable Biologists   Charles Darwin · Alfred Russel Wallace · Thomas Huxley · Gregor Mendel · Stanley Miller · Norman Borlaug · Richard Lenski · Jerry Coyne · Richard Dawkins · PZ Myers
Notable quacks   William Dembski · Michael Behe · Geoffrey Simmons · Ken Ham · Michael Cremo
v · d Physics
Cosmology   Big bang · Relativity theory · The cosmos · Black holes
Quantum mechanics   Heisenberg Principle · Schrödinger's cat · Atomic decay
Physics straw men   Fine-tuning argument · Anthropic principle · Quantum mechanics and free will · Quantum mechanics and the after life · Quantum mechanics and Naturopathy · Something can't come from nothing
Notable Physicists   Plato · Isaac Newton · Albert Einstein · Maxwell Plank · Niels Bohr · Werner Heisenberg · Richard Feynman · Erwin Schrödinger · Freeman Dyson · Roger Penrose · Neil deGrasse Tyson · Stephen Hawking · Micho Kaku
Notable Quacks   Dinesh D'Souza · Ray Comfort
v · d Mathematics
Mathematics   Overview of mathematics · Numbers in reality · History of numbers
Statistics   Sample size · Selection bias · Data mining · Standard divination · Statistical significance · Statistical probability · Meta probability · Gambler's fallacy
Mathematics in nature   Golden ratio · Golden spiral · Fibonacci sequence
Mathematics and religion   Biblical value of pi · Noah's flood


v · d Skepticism
Religion   Afterlife · God · Soul · Angel · Demon · Prayer · Satan · Miracle · Exorcism
Paranormal   Witchcraft · Ghost · Mythical creatures · ESP · Faith healing · Near-death experience · Magic · Spirit
Superstitions   Astrology · Divinitation · Luck · Curse · Prophecy · Palmistry · Charms · Occult · Rain dance · Immanent end of the world
Pseudoscience   Alternative medicine · Reiki · Chiropractic · Homeopathy · Autism-Vaccine debate · Demonology · Angeology
Notable skeptics   Carl Sagan · James Randi · Michael Shermer · Issac Asimov · Richard Dawkins · Harriet A. Hall · Robert T. Carrol · Benjamin Radford
Arguments for the supernatural   You can't prove a negative · You can't prove God doesn't exist · God can't be defined · All the world's religions can't be wrong
Arguments against the supernatural   Outsider test
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