“I am often wrong,” wrote satirist and critic H. L. Mencken, a statement that would seem more disarming were it not for the fact that Mencken so often opened his quotations by suggesting his forthcoming thoughts were worthless. “My prejudices are innumerable, and often idiotic. My aim is not to determine facts, but to function freely and pleasantly.” I get this. I understand what he’s getting at, and sometimes I relate to it: Since our interior thoughts are (ultimately) arbitrary and meaningless, we might as well think whatever we prefer thinking. This was especially important to a guy like Mencken, who was against US participation in World War II and hated Franklin Roosevelt. He was quite willing to concede that his most intensely held opinions weren’t based on factual data, so trying to determine what the factual data actually was would only make him depressed. It’s a worldview that—even if expressed as sarcasm—would be extremely unpopular today. But it’s quietly become the most natural way to think about everything, due to one sweeping technological evolution: We now have immediate access to all possible facts. Which is almost the same as having none at all.