In the most non-trolling way that I can manage, why can this not be generalized to the economy?

Why is academia a special case scenario where bureaucracy and regulations create unintended consequences and cause people to expend effort to get around them, but we can't say the same thing about the economy as a whole?

Why do we believe that people can't even manage PhD's at a university, but we can take the same people, put them in government, and expect them to, for example, manage the monetary supply or see bubbles in advance and create proper policy to avoid them?