Under the U.S. patent system, a patent application must provide evidence that the
invention works, and that is based on another invention.
a. True
b. False
It is in society’s best interest that the MC of the last unit produced of a good is equal to
its MU.
a. True
b. False
In Egypt, in 1970, the Aswan Dam was completed. By preventing the annual flood of
the Nile (thereby providing millions of acres of arable land) and by providing
electricity, the dam was expected to raise the living standard of the Egyptian people-and
it has. However, it has also led to a rise in the water table which causes Egypt’s
limestone structures, including the pyramids, to absorb more salt water and to suffer
serious erosion from crystallized salts. Combined with air pollution and traffic
vibration, this erosion is turning the pyramids to dust. Economists analyze this type of
problem with the concept of
a. an externality.
b. the antiquity problem.
c. a free-rider problem.
d. the public good problem.