As recently as the 1950s, possessing only middling intelligence was not likely to severely limit your life’s trajectory. IQ wasn’t a big factor in whom you married, where you lived, or what others thought of you. The qualifications for a good job, whether on an assembly line or behind a desk, mostly revolved around integrity, work ethic, and a knack for getting along—bosses didn’t routinely expect college degrees, much less ask to see SAT scores. As one account of the era put it, hiring decisions were “based on a candidate having a critical skill or two and on soft factors such as eagerness, appearance, family background, and physical characteristics.”
The 2010s, in contrast, are a terrible time to not be brainy. Those who consider themselves bright openly mock others for being less so. Even in this age of rampant concern over microaggressions and victimization, we maintain open season on the nonsmart. People who’d swerve off a cliff rather than use a pejorative for race, religion, physical appearance, or disability are all too happy to drop the s‑bomb: Indeed, degrading others for being “stupid” has become nearly automatic in all forms of disagreement.
It’s popular entertainment, too. The so-called Darwin Awards celebrate incidents in which poor judgment and comprehension, among other supposedly genetic mental limitations, have led to gruesome and more or less self-inflicted fatalities. An evening of otherwise hate-speech-free TV-watching typically features at least one of a long list of humorous slurs on the unintelligent (“not the sharpest tool in the shed”; “a few fries short of a Happy Meal”; “dumber than a bag of hammers”; and so forth). Reddit regularly has threads on favorite ways to insult the stupid, and fun-stuff-to-do.com dedicates a page to the topic amid its party-decor ideas and drink recipes.