Problem 1. Is it true during times of high unemployment trade restrictions should be imposed to protect domestic employment?
Problem 2. Is it true the only way the standard of living can increase is to increase the quantity of labor and/or capital?
Problem 3. Is it true the "mark to market rule" has had little impact on banks and insurance companies over the last few years?
Problem 4. Is it false an increase in corporate income taxes increases the investment in physical capital for any given interest rate?