Two concepts of value, two rates of profit, two laws of motion

Research in the temporal single-system (TSS) interpretation of Marx's value theory has refuted the Okishio theorem, which had supposedly disproved the law of the falling profit rate. In response to critics who confirm the correctness of the TSS refutation but, curiously, still uphold the Okishio theorem, this paper clarifies what the theorem actually asserts and why that assertion is false. It also shows that TSS results do matter: the contradiction between value and use-value, and the difference between temporal and simultaneous valuation, are crucial. Finally, the paper examines the role the Okishio theorem has played in suppressing Marx's work.