[neutralino]

Originally Posted by sillysally Ok, I understand it better now Greg but you brought up a good point, you called it a fact. Theory isn't fact is it? Why isn't it called the 'fact of everything' instead of the 'theory of everything'? FOE vs TOE?

Because science doesn't allow one to prove anything; only disprove it. For a scientific theory to be widely accepted as true, it must account for all the observational data, and agree with it all. However, there is nothing to say that one day we might find some piece of observational data which disagrees with the theory. The theory becomes stronger and stronger the more data it accounts for, but is never absolute truth: i.e. this is not mathematics!