"Why? When the human condition was marked by hunger and famine, it made perfect sense to crave condensed calories and salt. Now we live in a food glut environme

"Why? When the human condition was marked by hunger and famine, it made perfect sense to crave condensed calories and salt. Now we live in a food glut environment, and we have few genetic, cultural, or psychological defenses against this novel threat to our health. Similarly, we have few defenses against these novel and potent threats to the ideals of democratic speech, even as we drown in more speech than ever." In the past, mass speech was difficult, expensive, and centralized. Now it is cheap, universal, and everyone can partake -- so the limiting factor becomes the attention of the audience. Memes that grab people's minds spread through the population, and oftentimes the most extreme and unreasonable ideas spread the most quickly, just like weeds can grow quickest first.