That's also true, if you're honest with yourself and don't become ossified. I should stipulate though that you can arrive at about 99% of your beliefs and know

That's also true, if you're honest with yourself and don't become ossified. I should stipulate though that you can arrive at about 99% of your beliefs and know them thoroughly enough to know why you believe them, while still being willing to change your mind if you're given new evidence.