<i>The fact that some people use astrology to play the markets, and seem to get results that are as good as those of economic theory, says a lot about both.</i><p>So meteorology isn&#x27;t a real science either, I assume? Having a perfect model doesn&#x27;t mean you can predict the behaviour of a system; conversely, not being able to predict the behaviour doesn&#x27;t mean the model is flawed, or non-scientific.<p>That said, I do agree that economics is taken way too seriously for its incipient state.