@Lustig Andrei,
but it is also a theory. A theory surrounds a "Body of facts and evidence" that supports an explanation of a phenomenaon.
IN FACT
A theory is fact. The dictionary gives several definitions and , in the American Collegiate, the first definition for a theory is, as Ive presented above, but the SECOND definition states that a theory is a "proposed explanation whose status is still conjectural". The problem with these overlapping hierarchical definitions is that most people don't recognize the robust factual basis of the word "THEORY" when used in science. Think ATOMIC THEORY, or CONTINENTAL DRIFT THEORY or GERM THEORY.
Its a bitch when words get coopted for different ends. Look at how the English language has been fucked with to satisfy computer geeks.
If I gotta learn the differences of language in computerese, then the damn IDERS better learn the meaning of theory when used by science.
THIS IS NOT NEGOTIABLE