The One to Ten Pain Scale Is Not a Scientific Method?

"There's no way to, like, you can't, there's not, like, an objective measurement of pain," he says. "I know people who have chronic pain conditions for whom ... they'll get hurt in a way that would, like, fuck me up for a day or two and they just grin and bear it." He adds: "What's to stop someone from saying their pain is something higher than it is?"