" Change blindness in the world of facts and knowledge is also a problem. Sometimes we are exposed to new facts and simply filter them out. But more often we have to go out of our way in order to learn something new. Our blindness is not a failure to see the new fact; it’s a failure to see that the facts in our minds have the potential to be out-of-date at all. "

― Samuel Arbesman , The Half-life of Facts: Why Everything We Know Has an Expiration Date