A Quote From Nassim Nicholas Taleb

"Let me explain. If you consider your diet and exercise as a simple energy deficits/excesses, with a straight calorie-in, calorie-burned equation, you will fall into the trap of misspecifying the system into simple causal and mechanical links. Your food intake becomes the equivalent of filling up the tank of your new BMW. If on the other hand you look at food and exercise as activating metabolic signals, with potential metabolic cascades and nonlinearities from network effects, and with recursive links, then welcome to complexity, hence Extremistan. Both food and workout provide your body with information about stressor in the environment. As I have been saying throught, informational randomness is from Extremistan. Medicine fell into the trap of using simple thermodynamics with the same physics-envy and with the same mentality and the same tools as economists did when they looked at the economy as a web of simple links. And both are complex systems."