More from Farhad Manjoo in True Enough: Learning to Live in a Post-Fact Society:

“Investigating the rise of carelessness toward “reality” is, of course, the headlong purpose of this book. But I’ve been driving at a theory more pervasive than the peculiar psychology of one president, the transgressions of a single dominant political machine, or the aims of certain powerful players. The truth about truthiness, I’ve argued, is cognitive: when we strung up the planet in fiber-optic cable, when we dissolved the mainstream media into prickly niches, and when each of us began to create and transmit our own pictures and sounds, we eased the path through which propaganda infects our culture.”

(Photo credit: TJ Morton)