When did evolution become a fact and not a theory?
Molecules to man evolution has never been shown to be fact. In fact I believe it is too generous to even call it a theory because a theory is supported by facts which this type of evolution has none. Also since we still call it the “theory of gravity” it is a disservice to group it with something called the “theory of evolution”.
It is technically a theory, not a fact, but a scientific theory is far more than a guess. It is a way of explaining and describing the facts we observe, and is a generally accepted truth. In normal conversation, the word “theory” can mean as little as the word “idea,” in which case describing the theory of evolution as a fact is more accurate.
Like the existence of atoms, evolution is technically a theory. And, like the existence of atoms, it is such a thoroughly supported theory, so completely free of competing alternative scientific theories, that for all intents and purposes it is a fact, and is treated as such by all real biological scientists. Evolutionary theory forms the foundation of the biological sciences, just as atomic theory forms the foundation of the chemical sciences.