Answer: 1. Differences in scientific judgements.
2. c. Tariffs and import quotas generally reduce economic welfare.
Explanation:
1. Economists tend to have very varying opinions and this is a well known fact. So much so that even former President Ronald Reagan made jokes about their difference in opinions.
The two Economists in the scenario above, Paolo and Sharon both seem to disagree with each other because they believe that bailouts affect the Economy in different ways. This is most likely due to the scientific judgement that they reached after researching or thinking about the problem from different angles.
2. Despite the differences that Economists have with each other, it is a general belief that Tariffs and Quotas and indeed any hindrance to free trade between countries reduces economic welfare. In the case of Tariffs and Quotas, that reduction in welfare is called a Deadweight loss. You would be hard pressed to find an Economist that supports Quotas and Tariffs.