5 Basic Principles of Economics

Thinking Like an Economist

Tag: Opportunity Cost

  • Achieving your New Year’s Resolutions: The Margins Principle

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    People state New Year’s Resolutions (“stop drinking”, “stop smoking”, “lose 30 pounds”, …) to make a big improvement in their life. Famously, most fail. This issue is not isolated to decisions made on New Year’s Day or to people trying to make themselves better. There are deeper lessons to be learned: thinking about the margins…

  • Unexpected Economic Insights During Christmas

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    Christmas is an enjoyable time for many, including many non-Christians living in countries where Christians are a minority. It is a time for presents and food and thinking of others. This post identifies some unexpected ways that the five basic principles of economics appear during this time. Familiar attempts to apply economic ideas to Christmas…

  • “Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward.”

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    This quote by Oscar Wilde offers a lesson to students who are bored by studying. You can complain that your teacher is world class, at curing insomnia. You can complain that the examples used in class were excellent, 50 years ago. You can complain that doing well on tests is irrelevant, since employers rarely ask…

  • Retail Sales in Canada: Benchmarks

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    Statistics Canada recently announced that Canadians spent about $66,000,000,000 at retail stores in July. What does that mean? One of the challenges with studying economics is that people quote numbers even if the audience has trouble with the context. This lack of context is especially evident in media reports which shift between related-but-different measures (e.g.,…

  • Swiftonomics: Economic Ideas and Taylor Swift

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    Taylor Swift is accused of causing inflation. She also represents an innovative organization worth more than US$1,000,000,000. Beyond this high-level perspective on her impact, many teachers are using her career to demonstrate old economic ideas more memorably. Some instructors offer entire courses in university [1] [2] [3] [4] [5] and at the high school level.…

  • The Opportunity Cost Principle

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    All important decisions or choices involve a trade off. Thus, any explanation of why somebody chooses one thing must consider the alternative(s) that could have been chosen but were not. Often, opportunity cost in a market economy can often be summarized accurately by using relative prices: if the price of an apple is $2 and…