Gyan chain

Sitting through finance electives and listening about philosophy, I wonder what is the source of knowledge. Where do new thoughts emerge, most fields like IT borrow concepts from real life to build architecture, for example, we have abstraction, inheritance, encapsulation as object oriented concepts. Also in finance, a lot of ideas seem to be brought in from physics, life sciences, even philosophy.

So I thought about a gyan chain..
Most gyan flows from philosophers, the greek kinds Platos etc.

Next are the Physicists, The newtons the Einsteins....
And then comes the economists...
Well there is actually a subject called econophysics, where fractal analaysis is used on derivatives.

They are followed by Finance and Marketing which borrow from Economics.
marketing was pulled out of Economics by the like of Kotler.

So essentially a brilliantly thought concept flows down the gyan chain.

Wonder where MBA grads sit in this chain.!!!