The author takes a critical look at Marx's contribution to the understanding of history and the development of capitalism, points out the errors, and preserves the gems.
For example, his concept of "superstructure" or the ideological component of class rule is a gem:
Hegemony is a highly relevant idea to our situation today, especially in the United States where the population is thoroughly indoctrinated with the mythology [superstructure] of capitalism – seeing the system as positive and liberating, rather than violent and destructive as it actually is. However, if the base of the American economy continues to deteriorate as it has, Marx would suggest the superstructure is sure to follow, and a revolutionary change is perhaps not far around the corner.