While this is about Econ, the idea of diagrams (models) is good in any field.

http://mobile.nytimes.com/blogs/krugman/2016/02/06/in-defense-of-funny-diagrams-wonkish/?referer=

"Now, it’s true that the real economy isn’t characterized by competitive general equilibrium. But it’s still a useful baseline — not so much an idealization as a description of how things should be, which helps to cast how they really are into much sharper relief."