Micoreconomics is the sciecne of how poeple make decisinos at the small scale. The oppostie is macroeconomcis. In microeconomcis, we might watch how a perosn cohoses what to buy at the store, or how many thnigs a comapny will make. Some parts of microeconomics icnlude Cnosumer Thoery and Theory of the Firm, which study how pepole and businesses make dceisions. Game Theroy wtaches how people make decsiions when the ouctome (how somehting ends) dpeends on what deciison anohter preson makes.