When Not to Use Neural Networks

Right off the bat, this quote by George Box points us to a fundamental truth: all models are approximations. In other words, there are no right models or correct choices. Thus, by very definition, we are always using the wrong models. However, that's not to say they can't be useful. A useful model is one that brings value to its users: larger profits, lower costs, insights into problems, useful recommendations, a course of actions, etc.