Then please provide a consistent with observations theory on how physics has changed with time. Or do you have to throw thermodynamics out the window because you've gone and screwed causality? One side has a whole bunch of consistent observational evidence. The other side has a lot of frantic handwaving and inconsistent data points.

The point being is, creationists have zero idea why they think 6,000 is some magic number in this case, other than bob said so in a book. But yea, books are written by men and men are liars. Even looking at things like RNA/DNA mutation rates in known species it's pretty damned easy to see that things have been around a whole lot longer than 6k years.