Just to sort out a minor snag: evolution is a scientific fact. The public's idea of a "theory" and science's idea of a "theory" are two different things, and this annoying morphological discrepancy has indeed been a source of great confusion--most uninformed "creationists" frantically and triumphantly leap all over the face that it's known as "The Theory
of Evolution," thinking that the term "theory" connotates a lack of evidence or a sub-meaning of tentativity. There's nothing tentative about it.
If we would all briefly divert our attentions to supplicate our omniscient deity, Google, we can all safely realize that a scientific theory
is "a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world."
Sorry about that, I just needed to make that brief elucidation--it buzzes around in my head whenever somebody invokes the "theory" misconception.[ Post made via iPhone ]