- Summing Exports and Imports
TLDR: Summing the magnitudes of exports and imports seldom appear in “A” level Economics. But that doesn’t mean you won’t see that in the real world.
- Questions on Cost Curves and Economies of Scale
TLDR: Someone sent me a picture of his notes, and asked me if it contradicts what he had learnt in earlier sections. It doesn’t – but the reasons are not immediately obvious.
- Is the Marshall-Lerner Condition important for “A” level Economics?
TLDR: Yes. It is a very critical assumption/condition for the exam. Leave it out in the exams at your own risk.
- Will an increase in real GDP raise personal incomes?
TLDR: Yes, but understanding the mechanisms behind the GDP accounting methods should both inform and caution us.
- Why is a tax on cigarettes considered regressive?
TLDR: Because it is a bigger financial burden on lower income segments of the population.
- Will COVID-19 appear in this year’s “A” level Economics exam?
TLDR: No, but it doesn’t mean students should ignore such news.