Comida

do blog do Mankiw (que eu descobri hoje)
http://gregmankiw.blogspot.com/2007/06/richard-rorty.html

"I recall one paper for the course that affected my eating habits, at least temporarily. The assigned topic was something like this:
Aliens from another planet, with vastly superior intelligence to humans, land on earth in order to consume humans as food. What argument could you make to convince the aliens not to eat us that would not also apply to our consumption of beef?
I can't remember what I said in the paper, but I remember becoming a vegetarian for several weeks thereafter. "