The article is an attempt to evaluate accuracy of Marx’s predictions and to present some reasons for Marx’s ineffectiveness as a forecaster. The article discusses contemporary research on forecasting, uses the results to Marx, and analyses the dialectic aspect of laws in order to explain forecasting weaknesses of Marx. The author of Capital turns out to be – in P.E. Tetlock’s typology – a ‘hedgehog’, i.e.: a bad forecaster, who uses questionable methods to defend his predictions at all costs.