"The mental capacity of a person to make reasonable contracts, is the only criterion, by which to determine his legal capacity to make obligatory contracts. And his mental capacity to make reasonable contracts is certainly not to be determined by the fact that he is, or is not, twenty-one years of age."

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There are markets extending from Mali, Indonesia, way outside the purview of any one government which operated under civil laws, so contracts weren't, except on trust. So they have this free market ideology the moment they have markets operating outside the purview of the states, as prior to that markets had really mainly existed as a side effect of military operations.

— David Graeber