Most people, it seems, revert back to some kind of baseline happiness level within a couple years of even the most devastating events, like the death of a spouse or loss of limbs.

• 多数人经历过最惨痛的事情，例如配偶死亡或肢体残疾等，之后的若干年内，他们的幸福感水平又回复到某个基线上。