Ok - let us exclude the evidence of the evolutionists.
That still leaves the following fields of science that have evidence that the Earth is > 6000 years old.
Astronomy
Botany
Geology
Physics
Along with quite a few more that I do not currently have time to name.
I guess what I am trying to say is that for YEC to be correct nearly every aspect of current scientific thinking has to be, not only incorrect, but incorrect in a way that is almost beyond description.
Now if you will excuse me I have a .net application that I have to work on.