Krishna Bharadwaj's "Return to Classical Theory": an attempt towards an archaeological reconstruction

In the wake of Sraffa's return to classical theory', Krishna Bharadwaj undertook a critical reassessment of Marshall's claim to continuity with classical theory in general and Ricardo's intensive margin' in particular. Her analysis is based on an analytical separation between two distinct ways of economic reasoning: the surplus based' and the demand and supply based' theories. Calling it an archaeological reconstruction' of the history of economic theories, I will examine how such an interpretation of theoretical shifts clarifies both the presuppositions behind analysing at the margin', and hence its radical departure from the conceptual content of the classical theory.