All of macroeconomics is linear

• A model of macroeconomics learned at the Intro to Economics level, everything is linear.
• Since assumptions about human behavior and consumption are linear, the resulting macro model is also linear.
• Some may doubt this reasoning (blu3mo)(nishio).
  • As the level advances, more complex models may emerge.
  • It seems likely that although micro-level models are complex, when averaged or summed at the macro level, they become linear (blu3mo).
• I think assuming y=f(x) depends on a single value is fundamentally flawed; it should be a probability variable P(y; x) (nishio).