What Is a Theory? A Scientific Definition | AMNH
https://www.amnh.org/exhibitions/darwin/evolution-today/what-is-a-theory
WEBIn everyday use, the word "theory" often means an untested hunch, or a guess without supporting evidence. But for scientists, a theory has nearly the opposite meaning. A theory is a well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts.
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