The proper study of Mankind is Man.
The proper study of Man is anything but Man; and the most improper job of any man, even saints (who at any rate were at least unwilling to take it on), is bossing other men. Not one in a million is fit for it, and least of all those who seek the opportunity.
There's a certain libertarian right-wing view that there should be no FDA, that people can decide for themselves whether medicines are safe and effective. That's nonsense. Most people don't have the expertise or the resources to mount a proper study to find out whether a treatment is safe or effective.
Really, the proper study of economics is fulfilment, not consumption... It doesn't even matter if it's a green product or a green house... It's still consumption. What matters in this world is the fulfilment of people's needs and the fulfilment of their aspirations.