What Marx added was not commentary. It was a theoretical intervention of Biblical proportions, if you will pardon the expression. My argument would be that the contours of Marx's theory are more clearly defined against the contrast of the 1821 pamphlet's argument. But the influence of The Source and Remedy on this breathtaking passage about the creation of disposable time from the Grundrisse is unmistakable. "The creation of a large quantity of disposable time..." echoes Marx's earlier statement that the "whole development of wealth rests on the creation of disposable time" and thus ties the third fragment on machines unequivocally to the first fragment, as do the centering of surplus population and the juxtaposition of the superfluous and the necessary.
The image, from a 1955 LIFE magazine feature, celebrated the emancipation of family members from household chores that disposable goods provided. It unintentionally evokes the anti-Nazi photomontage by John Heartfield, "Hurrah, die Butter ist alle!"