Originally posted by: zephyrprime
Originally posted by: Cattlegod
Similar to engineering theories - economic theories rely on a ideal situations and rational people. Because ideal situations do not exist, and people are not rational, anomalies will be created.
I think there's even more to it. I think their economic theories are wrong even in an ideal situation.
Look at this article:
http://www.theatlantic.com/doc...12/blodget-wall-street
Part of it talks about what happened in the real estate market. You'll see that at each point in the real estate buying chain, people were acting rationally. True, they weren't necessarily acting with perfect information (that's another problem. Economists seem to think that people and markets have perfect information. How exactly can information violate the laws of entropy and thermodynamics when nothing else can?) but then again perfect information is never available. If only economists would consider people to be heavily flawed and imperfect, their theories wouldn't be so nonsensical.
Let's look at what happened in the realm of the banks. Greenspan says he is shocked that self interested banks made such irrational decisions that eventually led to their demise. But was it really irrational? A bank is not a singular entity. It is really a composite of people, rules, laws, capital, and plant. What's logical for each of these individuals working at the bank to do is not necessarily what is logical for the bank to do. It's logical for each individual working at the bank to look out for their own interests and screw everyone else. If only one person in the bank thinks this way and everyone else is a saint, the selfish individual will attain epic win in the game. The problem is, in these investment banks, everyone acts selfishly including the CEO and the board. The results produced when everyone acts selfishly are worse than if no one selfish. Philosophy students will recognize that I'm just talking about the classic "tragedy of the commons".
What's more, there's an overwhelming tendency to only think about things in the short term. Any student of computer science knows that although short term thinking (greedy algorithms) sometimes produce optimal results, there are cases where they do not. In the real world, it's pretty clear that short term thinking produces good results in the short term and bad results in the long term. However, many individuals are forced to think only in the short term. There are many situations in nature where organisms act rationally in the short term but irrationally in the long term. They often need to do so because in nature, you can't get to the long term if you can't SURVIVE the short term. The same sort of thing happens in competitive environments sometimes. Brokers may go for that extra commission selling toxic securities even though in the long term they will upset and eventually lose the client those toxic securities were sold to because if the broker DIDN'T sell imprudently, he would lose the short term contest of generating good enough sales numbers in comparison to his peers and would never be able to keep his job long enough so that he could enjoy the benefits of looking out for your clients long-term. If you don't survive the short term, you won't ever be able to reach the long term.
And also, since economists have never been able to predict recession accurately, macroeconomics can't be considered a science.