Marx's profit rate computed from the Penn World Table, with every contested
methodological choice exposed as a control rather than baked in. Change a
switch and watch what happens to the law.
r = s / (C + v) · s = Y(1 − labsh) · v = Y · labsh · C = net fixed capital stock
Static snapshot — this page shows one pre-computed result (G20, aggregate, C+v, 1950–2023). The controls below are for reference; changing them won't recompute anything on this deployment, which has no live backend. The full interactive version, with any country set or date range, runs locally from the marxist-ai project.