As for your second question, confirming and denying things based on our knowledge is what science is. If we find new workable theories and/or facts that go against our current process, well...we change our process to fit the newly found evidence.
We work with our knowledge because it's all that we have. We don't have access to anything else besides how we as humans think and retain.
ishpatoon1982 t1_j1dpzzj wrote
Reply to comment by hreflet in Can we truly know the age of the universe? by Geodad478
As for your second question, confirming and denying things based on our knowledge is what science is. If we find new workable theories and/or facts that go against our current process, well...we change our process to fit the newly found evidence.
We work with our knowledge because it's all that we have. We don't have access to anything else besides how we as humans think and retain.