Considering that I spent years in that endeavor, with solid theoretical and empirical results, in my dissertation: *The "Law of the"Falling Tendency of the Rate of Profit": It's Place in the Marxian Theoretical System and Relevance to the US Economy*, I think I might be excused for regarding such a statement as an assertion of ignorance and a cavalier dismissal of the entire Marxian stream of economic thought.
and for regarding
> ...To me, value theory is a story about the origins of the
> phenomenal categories of profit, interest, and rent in exploited
> labor...
as proclaiming a truly American superficiality in regard to theory in general, and Marxian theory in particular.
Shane Mage
"All things are an equal exchange for fire and fire for all things, as goods are for gold and gold for goods."
Herakleitos of Ephesos, fr, 90