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Keywords:

  • outrageous hypothesis;
  • cranks;
  • creationism;
  • paradigm shifts;
  • ruling theory

Hypotheses in geomorphology may be conventional or unconventional. It is argued that outrageous hypotheses produced by conventional thinkers with a streak of unconventionality occasionally shift paradigms and are invaluable alternatives to conventional hypotheses, which tend merely to shore up seemingly safe and secure ruling paradigms.