Why No Gains from Trade in Economics?

TL;DR

No gains from trade occur when two countries have the same opportunity costs for their goods. In this scenario, each country produces apples and bananas at the same rate, leading to no comparative advantage. Consequently, trading does not benefit either country since their production capabilities are equal.

Transcript

• [Instructor] So let's say we're in a very simplified world where we have two countries, Country A and Country B and they're each capable of producing apples or bananas or some combination of them and what this chart tells us if Country A put all their energy behind apples in a day they could produce three apples, and if they put all of their ener... Read More

Key Insights

• 😘 Understanding comparative advantage helps determine which country has a lower opportunity cost in producing a specific good.
• ™️ When countries have different opportunity costs, there are potential gains from trade.
• 🉐 Countries with the same opportunity costs do not have a comparative advantage, resulting in no gains from trade.

Questions & Answers

Q: What is comparative advantage?

Comparative advantage refers to the ability of a country or entity to produce a specific good or service at a lower opportunity cost compared to others.

Q: How is opportunity cost calculated?

Opportunity cost is calculated by determining the alternative good or service that is foregone in order to produce a particular good or service. It is measured by the ratio of the quantity of the alternative good given up to the quantity of the good produced.

Q: Can countries have the same opportunity costs and still have comparative advantage?

No, countries with the same opportunity costs for producing goods do not have a comparative advantage. Comparative advantage arises when one country has lower opportunity costs in producing a particular good compared to another country.

Q: Are there any scenarios where there might not be gains from trade?

Yes, in situations where countries have the same opportunity costs or when one country has no comparative advantage and both countries have the same opportunity costs, there may not be gains from trade.

Summary & Key Takeaways

• In a simplified world, Country A can produce 3 apples or 6 bananas in a day, while Country B can produce 2 apples or 4 bananas in a day.

• The opportunity cost of producing an apple in Country A is 2 bananas, while the opportunity cost of producing a banana is 1/2 of an apple. In Country B, the opportunity cost of producing an apple is 2 bananas and the opportunity cost of producing a banana is 1/2 of an apple.

• Both countries have the same opportunity costs, indicating that there is no comparative advantage, and hence, no gains from trade.