Tell that to a creationist looking at Carbon 14 dating results.
I also believe that "Creationist" is spelled with a "C". Now, is there any Creationist that doesn't already know "The Truth"?

So, the Creationist will accept or reject "facts" based upon how they fit with his/her preconceived notion of "The Truth".

For example, any "facts" that cast doubt on C14 dating will be accepted.

Any "facts" that validate C14 dating will be rejected. (or, at best, invalidated because of the "facts" mentioned in the previous line.)

But remember, I already acknowledged that the best (I think) we can hope for is a ever-closer approximation of the truth.
Hmmmm, I think the problem is that you don't understand that there is a difference between "truth" and "The Truth".

"truth" == "facts" for sufficiently small facts and small truths.
I have blond hair. That is a fact. That is the truth.

Now, again, to illustrate this point, tell me "The Truth" about people. This is the SECOND time I've asked you to do this.