The history of economic thought contains philosophy and politics, in addition to mathematics and logic. But, most importantly, economics involves people; the consequences being an imperfect science built upon observations of human behaviors and interactions.
Moreover, from studying the history of economic thought we can have informed opinions, and the choice of accepting, or rejecting, these discussions. It is imperative to think about thought: where our ideas come from and how they color our world. Have we stopped thinking? We want to believe that economics is a science because that makes us feel safe. We can pick and choose what we want to believe. But what is important is a basic understanding of what we are picking and choosing to believe. One has to articulate and communicate well the reasons for or against a statement. Economics isn’t a perfect science with a short history; rather it’s a dynamic, social science. It will only continue being one if we don’t adopt a dispassionate view.