@unknownuser said:
Facts don't change, Jason. Our model for interpreting those facts might change along with, perhaps, our perception of those facts...but facts themselves are immutable.
Um, that's an interesting statement. I read it several times before it hit me: the logic is circular. You can't establish a "fact" based on a mutable set of rules. "Facts" per se, are based on observation and interpretation, which are in turn based on our current ability to accurately test, measure, reason, etc. If the methods of determination are flawed, so are the "facts" ... ie; you can't establish absolutes from mutables ...
Merriam's Dictionary defines one use of the word "fact" as "a piece of information presented as having objective reality."
I maintain that it's "subjective" and what is "reality" anyway? If our model for interpreting "facts" changes, then "facts" aren't "facts" at all.
To wit, Einstein established the "fact" that the speed of light is 299,792,458 m/s. In September of last year, a group of scientists found subatomic particles that move faster than the speed of light. So the "fact of the speed of light" is not a fact at all, only the interpretation of data constrained by our current level of understanding, which encompasses our ability to test, observe, etc. Of course, the new findings are subject to change as well ... 
I assert that what we know currently as "facts" are nothing more than mutable conditions that we evaluate and call "facts" until proven otherwise.
Cheers.