I never needed it to be explained to me before. The point is, what was "fact" yesterday may not be a "fact" today, which makes some people leery of regarding anything as a fact. It all boils down to belief when you you think about it. And just so you know, I'm not saying that science should dogmatically hold on to a previous view if it is demonstrably shown false. I'm merely pointing out that if something is considered true today, wait around and it might be completely false in a couple of days.
There is a considerable reply that I made to you in the GD thread about this very issue of changing facts.
Facts do not change. Theories change. There are things the may be called fact that later turn out to not be fact but a fact is either true or it was never a fact to begin with. That is by definition.
Maybe you could offer an example of these facts that you say change so much in science?
Do these facts change if it is an athiest versus a christian that observes them? Are there Athiest Facts and Christian Facts?
Of course, biblical creationists are committed to belief in God's written Word, the Bible, which forbids bearing false witness; --AIG (lest they forget)