If we look at two different foods here, broccoli and the brownie on the right, they're of course much different in calories but they're different in other ways.

让我们看看两种不同的食物,左边花椰菜,右边布朗尼蛋糕,它们除了卡路里含量不同,还有其他差别

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So if you were starving and you really needed energy, that is your body needed calories, it needed usable energy in order to survive, the broccoli's not going to do you much good and the brownie would be terrific.

假如你快饿死了,实在需要能量,那是你的身体需要卡路里,身体需要可利用的能量去支撑,花椰菜这时就没多大帮助了,布朗尼蛋糕才是首选

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选