The usefulness of money in commercial societies comes from the fact that
A) money is backed by gold.
B) most people will change their behavior at least a little in response to money
incentives.
C) most people will do anything at all for money.
D) most people would rather spend money than save it.
E) the quantity of money can easily be expanded or contracted.
Did Mother Teresa create negative externalities when she helped the poor of Calcutta?
A) Yes, if her activities unintentionally imposed costs on others, such as upsetting
people who don’t believe in charity for the poor.
B) No, because she strove only to do good, not bad.
C) No, because her activities were accomplished in a state of grace.
D) No, because her activities were altruistic.
E) B, C, D, are all correct.
To say that an individual displays a positive rate of time preference mean