That is a misunderstanding of science and the scientific method.
Facts are not subject to debate. Debate does not render a falsehood true; nor does it make truth be false.
Nor do theories ever "become" facts. A theory is an explanation of a fact (generally the processes behind that fact).
A theory can never be proven to true. It can only be proven false (disproven). Consequently, an essential part of what defines a theory is that a theory can be tested.
For example, "God created the universe" is not a scientific theory because it is impossible to test. Science does not, can not, and will never prove (*nor* disprove) the existance of any god. Faith is immune to science, especially if faith avoids making any predictions that can be tested by science.
Theories can be, and frequently are, amended or even abandoned as new empirical evidence is collected that disproves portions of the theory. Note that new evidence that agrees with the predictions of the theory does not prove the theory.
But this does not happen through debate. This happens through the collection of empirical evidence.
If debate decides "fact", there is no science; just pseudo-science.
-- Mark --