Economics is a field of great depth and great rigor, and most of what I do is relate what I've been taught by PhD's in the field.
I don't think I've come across a field that isn't as popular to challenge either. There's a famous quote by an economist that the hardest part about being an economist is that everybody thinks they understand economics. Bryan Caplan has a similar story: he's one of the most renowned economists in the world and his dad, who knows nothing about economics, still tells him he's wrong about some of the most basic principles of the field.
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