/biz/ - Business & Finance

So, as I mentioned earlier, the Keynesians have a bunch of models for predicting economic behaviors. How accurate are these models, and are they the reason that Keynesianism is the predominant theory? More importantly, if we've created accurate models to determine economic behaviors and plan around it, then how the hell is economics even a subject of debate at this point? If I can objectively tell someone that the economy is going to go into a recession in 3.4 years and that we should increase government spending 36.4% to alleviate it, then how on God's green Earth is political policy regarding the economy not an open-and-shut case?