Joby: Did you hear they're installing a frozen yogurt machine?
Me: We already have Ben & Jerry's ice cream in the kitchens.
Joby: But frozen yogurt is better for you.
Me: Well ... [explain eating philosophy] ... So if you eat what you really want, you'll be satisfied sooner and you'll end up eating less overall.
Joby: No, I would eat the same amount of ice cream or frozen yogurt. So I'd be either eating three thousand grams of fat, or three thousand grams of sugar.