Peg,
dating methods can be flawed and not give accurate dates. Who's to say their dating of these languages is accurate?
No science is ever absolutely perfect. Anything that is right 99% of the time isn't perfect but it can still be highly accurate and very reliable. Absolute proof is for math, not science.
But denial of science isn't helping you here. When different cultures have unbroken histories that run back before the tower of Babel story, who needs a dating method? When you can see their distinct languages, you can see the Babel story is wrong. When you look at how many distinct languages developed during recorded history and that had nothing to do with God, you see that the Babel story makes no sense. The entire story is ridiculous - if read literally.
However, if one were to read the tower of Babel story metaphorically, they would see the lessons that are contained within and it makes sense.
Edit, just wanted to address this,
The bible is a record of human history not found anywhere else, it provides answers to questions not found anywhere else. It is in harmony with historical facts and time and again archeology digs up places and people whom critics have denied existed.
You're right that the bible provides answers to questions - but the problem is that it keeps giving wrong answers. And after these wrong answers are given, believers typically stop asking questions. And so begins the vicious cycle of religious ignorance.
And if someone was to write a book of lies, they would still get all the names of people and places right. Why wouldn't they? So when the bible is correct about the names of cities and rulers, that doesn't mean that snakes can talk and people can walk on water or live in a whale for 3 days. If I said that the USA exists, Obama is its president, and I can fly - just because I was right the first 2 times doesn't mean I can fly.
Edited by rockondon, : Addressed another point