Editor’s Note: This article previously appeared in a different format as part of The Atlantic’s Notes section, retired in 2021.
Bobby Yip / Reuters

“Think of a carton of eggs. We’ve figured out how to protect the shells and keep them from cracking, but if you shake an egg, the yolk can still get scrambled,”—Glenn Beckman, marketing director for a company that makes football helmets, on why helmets can’t prevent all concussions.

“Are you putting up any kind of fight with your gut reactions?” —Joshua Greene, a psychologist, on how to tell if you’re making a moral decision.

“The whole ‘nice guy’ trope is … like, ‘Oh, if you put in the time, you’re entitled to her.’ ... Because really she does want you, she just hasn’t realized it yet,”—Julia Lippman, who studies communication, on how romantic comedies normalize stalking.

(Previous quotes from our sources here)