Consider the case of global environmental problems that spill across
international borders as a prisoner's dilemma of the sort studied in
Monopolistic Competition and Oligopoly. Say that there are two countries, A
and
B. Each country can choose whether to protect the environment, at a cost of
\(10,\) or not to protect it, at a cost of zero. If one country decides to
protect the environment, there is a benefit of \(16,\) but the benefit is
divided equally between the two countries. If both countries decide to protect
the environment, there is a benefit of \(32,\) which is divided equally between
the two countries.
a. In Table \(12.10,\) fill in the costs, benefits, and total payoffs to the
countries of the following decisions. Explain why, without some international
agreement, they are likely to end up with neither country acting to protect
the environment.