A big part of physics is thinking about whether a particular model is the right way to describe a system, which is also an important part of economics.
I find engineers tend to be bad at economic thinking. I suspect it's because they think in terms of applying a particular type of model and don't tend to think about fundamental principles.
I also think economics is just not intuitive for a lot of people, even smart people.
For example, an engineer friend of mine asked me why I would take out a car loan at 0% interest for the first year if I was able to pay it outright. He didn't have in mind the opportunity cost of capital because he's never thought about it. (This is when we were both in our early 20s, so before he's had a chance to manage any real money.)
reply