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List of alternative, speculative and disputed theories



         




This list of alternative, speculative and disputed theories includes examples of fields of endeavor that many in academia consider to be fringe or pseudoscientific, beginning from theories considered crackpot by all but their handful of followers and ending in respectable theories that are simply the minority view. Many of these practices are often quite popular, in part because they sometimes work. Opinion on the validity of these practices is extremely diverse. Many may qualify as protosciences.

In addition to a postulated theory, inclusion in the list is possible because that theory is:

  1. Asserting claims without supporting experimental evidence;
  2. Asserting claims which contradict experimentally established results;
  3. Failing to provide an experimental possibility of reproducible results; or
  4. Violating Occam's Razor (the principle of choosing the simplest explanation when multiple viable explanations are possible).
  5. Adhered to by a limited group.

Many of these theories are considered pathological science: a psychological process in which believers in a theory, who may have originally conformed to the scientific method, unconsciously veer from that method and begin a pathological process of wishful data interpretation.

The term ironic science was used by John Horgan in his book The End of Science to describe a "speculative, non-empirical mode" that mainstream science sometimes enters.

Note that historically, some currently respected theories would have appeared on this list, e.g. plate tectonics or the idea that stones could fall from the sky. Equally, a number of these concepts have in the past been regarded as mainstream theories (like luminiferous aether) or as strong hypotheses deserving of further study (like polywater).

In all of these cases experimental study has demonstrated the strength or weakness of the hypothesis.


Contents
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Theories

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Biology

See also Medicine below.
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Divination

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Geology

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Medicine

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Physics

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Psychology

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Sociology

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Xenology

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Miscellaneous

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See also

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External links




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