Invariably I get the question in class “Does this economic theory actually happen in the real world?” We then proceed to discuss upward sloping demand curves, trickle down theory, the GFC and the fact that few economists saw it coming and how Japan ran a massive stimulus programme but inflation was stagnant.
Most theories in economics rest on the premise that people, companies, and markets behave according to the abstract, two-dimensional illustrations of an introductory economics textbook, even though the assumptions behind those diagrams virtually never hold true in the real world. To understand economics you have to understand human nature.
Below is a table that I found in James Kwak’s book “Economism”. It takes theories found in most introductory economics textbooks and suggests what actually might happen to these theories in the real world.
For more on secondary school economics courses view the key notes (accompanied by fully coloured diagrams/models) on elearneconomics that will assist students to understand concepts and terms for external examinations, assignments or topic tests.