earls oil cooler Keynes argued that savings and investment were two interdependent variables, not two independent variables. The euro zone's landmark buildings are seen at the headquarters of the European central bank (ECB) in Frankfurt According to this model, the interest rate decision depends on the supply of savings and investment needs, money supply, money demand, four factors, cause a change in the saving investment, money supply and demand factors will affect the level of interest rates. This theory is characterized by general equilibrium analysis. Poorly considered activities confuse strong competitiveness with overt aggression. This should 't be the goal of team development activities. A cohesive team that can work successfully together doesn't have aggression to accomplish its goals. Such activities can be demeaning to the people who are often instructed to compete in a level that's largely meaningless in the job.