posted on Nov, 15 2004 @ 12:01 PM
I believe Scientific American retorts all this best:
1. Evolution is only a theory. It is not a fact or a scientific law.
Many people learned in elementary school that a theory falls in the middle of a hierarchy of certainty--above a mere hypothesis but below a law.
Scientists do not use the terms that way, however. According to the National Academy of Sciences (NAS), a scientific theory is "a well-substantiated
explanation of some aspect of the natural world that can incorporate facts, laws, inferences, and tested hypotheses." No amount of validation changes
a theory into a law, which is a descriptive generalization about nature. So when scientists talk about the theory of evolution--or the atomic
theory or the theory of relativity, for that matter--they are not expressing reservations about its truth.
In addition to the theory of evolution, meaning the idea of descent with modification, one may also speak of the fact of evolution. The NAS defines a
fact as "an observation that has been repeatedly confirmed and for all practical purposes is accepted as 'true.'" The fossil record and abundant
other evidence testify that organisms have evolved through time. Although no one observed those transformations, the indirect evidence is clear,
unambiguous and compelling.
All sciences frequently rely on indirect evidence. Physicists cannot see subatomic particles directly, for instance, so they verify their existence by
watching for telltale tracks that the particles leave in cloud chambers. The absence of direct observation does not make physicists' conclusions less