1. Marx constructing historical materialism is the apotheosis of theory innovation in human anamnesis history.

2. In this basic sense both historical materialism and Marxist political economy are undeniably structuralist.

3. In this respect Bukharin's grasp and use of historical materialism was superior to that of Preobrazhensky.

4. The split proved to be long-standing and had to do both with pragmatic issues based in history, such as the failed Revolution of 1905 and theoretical issues of class leadership, class alliances and interpretations of historical materialism.