Scientific skepticism

Scientific skepticism or rational skepticism (also spelled scepticism), sometimes referred to as skeptical inquiry, is a scientific or practical, epistemological position in which one questions the veracity of claims lacking empirical evidence. In practice, the term is most commonly applied to the examination of claims and theories which appear to be beyond mainstream science, rather than to the routine discussions and challenges among scientists. Scientific skepticism is different from philosophical skepticism, which questions our right to claim knowledge about the nature of the world and how we perceive it. Scientific skepticism utilizes critical thinking and attempts to oppose claims made which lack suitable evidential basis. The New Scepticism described by Paul Kurtz is scientific scepticism.

Characteristics
Like a scientist, a scientific sceptic attempts to evaluate claims based on verifiability and falsifiability rather than accepting claims on faith, anecdotes, or relying on unfalsifiable categories. Sceptics often focus their criticism on claims they consider to be implausible, dubious or clearly contradictory to generally accepted science. This distinguishes the scientific skeptic from the professional scientist, who often concentrates their inquiry on verifying or falsifying hypotheses created by those within their particular field of science. Scientific sceptics do not assert that unusual claims should be automatically rejected out of hand on a priori grounds - rather they argue that claims of paranormal or anomalous phenomena should be critically examined and that such claims would require extraordinary evidence in their favor before they could be accepted as having validity.

Popular targets of criticism among skeptics include psychics, parapsychology, dowsing, astrology, homeopathy, tarot reading, alien abductions, and ESP, which sceptics allege are pseudosciences or unsupported by existing evidence. Skeptics such as James Randi have become famous for debunking claims related to some of these. Many skeptics are atheists or agnostics, and have a naturalistic world-view, however some committed skeptics of pseudoscience including Martin Gardner express belief in a God.

From a scientific point of view, theories are judged on many criteria, such as falsifiability, Occam's Razor, and explanatory power, as well as the degree to which their predictions match experimental results. Skepticism is part of the scientific method; for instance an experimental result is not regarded as established until it can be shown to be repeatable independently.

By the principles of skepticism, the ideal case is that every individual could make his own mind up on the basis of the evidence rather than appealing to some authority, skeptical or otherwise.

Perceived dangers of pseudoscience
Skepticism is an approach to strange or unusual claims where doubt is preferred to belief, given a lack of conclusive evidence. Skeptics generally regard it as misguided to believe in UFOs and psychic powers if no empirical evidence exists supporting such phenomena. The Ancient Greek philosopher Plato believed that to release another person from ignorance despite their initial resistance is a great and noble thing. Modern skeptical writers address this question in a variety of ways.

Bertrand Russell argued that individual actions are based upon the beliefs of the person acting and if the beliefs are unsupported by evidence then such beliefs can lead to destructive actions. James Randi also often writes on the issue of fraud. On a case by case basis, he attempts to show how some promoters of pseudoscience make money from their claims, while secretly knowing them to be false, which is generally known as a "profit motive". Critics of alternative medicine often point to bad advice given by unqualified practitioners, leading to serious injury or death. Richard Dawkins points to religion as a source of violence, and considers creationism a threat to biology. Some skeptics support opposition to some cults and new religious movements because of their concern about what they consider false miracles performed or endorsed by the leadership of the group. They often criticize belief systems which they believe to be idiosyncratic, bizarre or irrational. See also Allegations against cults made by skeptics.

Television programs

 * Penn & Teller: Bullshit!
 * MythBusters
 * The Skeptologists (pilot)

Podcasts

 * The Skeptics' Guide to the Universe
 * Point of Inquiry
 * Skepticality: The Official Podcast of Skeptic Magazine
 * Skeptoid

Magazines

 * Skeptic magazine (US)
 * Skeptical Inquirer magazine
 * The Skeptic magazine (UK)