PPF
maximum quantity of one good that can be produced for any given production of the other
comparative advantage
opportunity cost of producing a good is lower for that person than it is for the other
absolute avantage
an individual can make more of something than the other can
circular flow diagram
Households
Market goods/services Factor
Firms (supply chain)
positive economics
the way the economy actually works
normative economics
the way the economy should work
Why economists disagree
2. assumption in a model