The first twist is in the theory of disribution. [...] In fact, the well-known neoclassical doctrine that "without interference" markets will function perfectly (or "clear") is also known as "demand theory". The second twist is in the theory of value: while the classicals took capitalist value, the relation of general equivalence, to be inherent in some material substance or human action, the neoclassicals understand it as "subjective," determined by individual tastes. [...]