I know, and I often catch myself thinking the same thing (how can you still think...) for many arguments on this site, but this one is just so much more obvious, in a very intimate and personal way, rather than bristlecone pine tree rings correlating to Carbon-14 decay, or even mutation and natural selection, that I couldn't stop myself from expressing it.
It reminds me of Bush et. al. who would never, ever admit to ever being wrong on anything, even when put face to face with errors and mistakes galore, until about the last month of the administration, and even then, it was always accompanied with rationalization.