I think you know what I mean, but you are right, it is important to be precise. The leap of imagination is not so great as you might think, the evidence practically explains itself, which is why Darwin, with no knowledge of DNA, was able to postulate the idea of natural selection. It's "devotees" (insinuation of religious faith rather than logic) happen to include all scientists, who consider it as close to a fact as science can determine. We believe what scientists say about Mars or cancer research, why in this one area are they not as credible? The general theory is accepted as the closest thing to a fact that science can determine, although there are still many details to be worked out. It can be observed in real time, especially with fruit flies and animals on islands. The label of "theory" doesn't mean the same thing as it does in civilian life, which is a best guess. Nothing in science should ever be considered "absolutely" understood, that's not how it works. By the way, I looked up Satan-, er, Sanatan Dharma and found this, It is my view that the truth of the Dharma is not factual knowledge, but insight, a kind of mental martial arts. No revealed scientific knowledge will ever be incompatable with it, although insisting on thoroughly tested theories as a guide to spiritual life might be.