1. Y = C + I + G + (X - M)
2. Consumption
   1. Consumption
      1. spending on
         1. goods
         2. services
   2. sup
      1. Income
      2. MPC
         1. (Change in Consumption)(Change in Income)
         2. MPC + MPS = 1
3. Investment
   1. Expectations go up
      1. investment goes up
   2. Cost of Capital
      1. if rises
      2. investment falls
   3. Rate of interest
4. Government Spending
5. Exports
6. Imports
   1. MPM is high in Ireland
   2. Income Rises
      1. M rises
   3. MPM
      1. (Change in Imports) (Change in Income)