.....the biblical age of the Earth .... is 6,000 years.....
I agree with you on that.
We may differ in our interpretation of the phrase "biblical age" though.
For example, I define it as horseshit.
You are funny, but...
Scientists and archeologists observe all kinds of things. They take measurements. They calculate what happens when they use their measurements on this and that. Then they extrapolate their calculations towards things that they do not have real information for.
Recently, scientists and astronomers found a Star Trek style force field within the Van Allen radiation belts around the earth. Until March 2013, scientists assumed there were only two belts, filled with high-energy electrons and protons, surrounding Earth. However, a NASA-launched probe detected that there was a third belt in between the two.
http://www.colorado.edu/news/releases/2014/11/26/star-trek-invisible-shield-found-thousands-miles-above-earthhttp://rt.com/news/210027-earth-shield-radiation-belt/http://news.discovery.com/space/raise-shields-star-trek-like-barrier-protects-earth-141201.htmhttp://www.business2community.com/space-science/scientists-discover-star-trek-style-shield-200-miles-earth-01082788In other words, scientists overlooked something important until recently. Now they are reformulating some cosmology physics to match the new data. The point? We don't know much of anything by scientific observation. We may know loads of details. But on a scale of what there is to know, we know very little.
The larger point is, our interpretations of what we see are often far from the truth, simply because we missed some little, key element. So, how do we know what happened in the distant past? We interpret the age of the earth based on things that we see. Yet, like the above mentioned force field, we don't have a clue as to what we missed, at least not until we discover it.
The people of ancient Bible times wrote things that they observed, just like today's scientists. The fact that they didn't know everything was the same for them as for the scientists of today. The fact that they described things as they saw them is exactly the thing that modern scientists do. What Bible writers didn't do is assume that they knew more than what they saw.
The biggest point? Why do we often believe our modern scientists who are proving themselves wrong all the time, and we don't at least consider the ancient Bible writers who, though they may not have been corroborated by modern scientists, have not been proven wrong?
We are the people. We are so arrogant, like we know it all. Yet we constantly find that we know so little. When are we going to wake up and look at reality, and let ourselves know that we don't really know very much of anything?