Economics started as a branch of philosophy that got a lot of support because it draw a lot of support for its theory from maths.

Then, more recently, a good number of very inteligent people noticed the behaviours of economic models could be better predict and understood by using very simple psychological analysis and models.

I remember reading an article by two physicists where they just picked the oh-so-precious math of a given economic model, analysed it using the methods used to analyse physics and concluded the model was faulty by x+y+z.

Economics is... a very strange thing.