If you were invited to be a moderator, do you think you would be able to tell when someone grasped every oportunity to revisit his favorite topic, no matter what the thread? What do you think should be done with such a person? Of course, this is off-topic and mentioned only rhetorically.
Some on the science side feel uncomfortable applying the principle of tentativity to facts, but as facts are gathered by fallible humans there is really no other choice. For example, professor Blondlot believed N-Rays a fact because he had observed their effects projected upon a screen, as had others. Percival Lowell and others believed the canals of Mars a fact because they had observed them through telescopes. If we ever find the Higgs Boson it will be through probabilistic analyses of the results of millions of high-energy particle collisions and not because we ever actually saw one. Even facts go through levels of tentativity.
Faith raises a good point when she asks for assessments of the degree of tentativity, but they would likely have the reliability of movie ratings. There's no substitute for the hard work of slogging through the evidence and forming one's own opinion. But if she's interested in the opinion of scientists, because of evolution's unparalleled success in explaining and interpreting the diversity of life, the fossil evidence and the genetic evidence, and because of the absence of evidence that doesn't fit the evolutionary framework, there are few that would give the supposed fact of evolution any chance of ever being falsified.
--Percy