Please let me cut to the chase, economics is a foundation on which many arrogant blood-sucking creatures are running their so-called financial intruments for money. They think they got a gift. They can't see their ways clear of temptation. They decide to lay it on the line. Then majoriety are wrong and they have to suffer the consequences.

Economists are no better than that. They are supposed to predict future economics trends. However they really do a pretty better job as a persuader than as a economist. Professionalists are somebody let you buy their genious opinions. We always feel fuzzy about the future, and that is why there are so many economists and they haven't became unemployed yet. Even though they have worked their tails off, they still can't tell you interest rate will reach what kinda level as nobody can show you when you are gonna accidentaly rendezvous an oooold friend on the street.

可以去看看厦门大学郑振龙教授写的一遍关于金融学和经济型关系的文章，相信可以给你一些启发的

邵宇那本书《微观金融学及其数学基础》的前言也讲到了这个问题