Well...maybe. Anyone familiar with Marx will tell you that the concept of productive labor is at the heart his anaylsis, as both Fabian and I have done in this exchange. To repeat the quote I included in a post a couple of days ago: the productive labor definition "expresses precisely the specific form of the labour on which the whole capitalist mode of production and capital itself is based". (Theories of Surplus value I, p. 396). You had said that not only weren't you sure about what it is, but you don't understand what the point is of productive labor as a category. So I tried to explain it from the ground up. You now say you got nothing out of that. Leaving aside any assessmant of the qualtity of my explanation, one thing is clear: you're still in the dark about this most fundamental point, to say nothing about other important parts, such as the uses of surplus value, as you acknowledge.
So what do we make of the basis for your judgements about marxian analysis?
I've reached another conclusion. This conversation hasn't been a complete waste of time. It has helped me understand what weight I should assign to any statements you might make about Marx, from his analysis of the laws of motion to whether the old fat guy had high blood pressure.