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...Introduction to macroeconomics lecture notes robert m kunst march greek makro big describes and explains economic processes that concern aggregates an aggregate is a multitude of subjects share some common features by contrast microeconomics treats individuals example thedecisionofarmtopurchaseanewocechairfromcom pany x not macroeconomic problem the reaction austrian house holds increased rate capital taxation whymacroeconomics only whole more complex than sum independent parts it possible de scribe economy forming models for all rms persons their cross eects investigates behavior imposing simplifying assumptions assume there are many identical pro duce same good but without abstracting from essential these used in order build typi cally such have three aspects story mathematical model graphical representation non experimental like e g history macro economics cannot conduct controlled scientic experiments people would complain about with reason focuses on pure observation because histo...