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Re: (OPE-L) Ajit's paper



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_________________ Rakesh, None of these people can answer my very simple question--the question that I asked you in the other post, that you have not answered yet. So let me again reiterate. Let's say somebody says, 'the value of a commodity x is 10 hours of socially necessary abstract labor'; Is this statement formally correct or incorrect. If incorrect, then why and if correct, then formally how can one arrive at the measure of 10 hours of SNA labor?

Ajit, I think it is the nature of a fetishistic economy that we can never measure with precision value which is necessarily mis-represented in the form of prices. All we have are price phenomena; that is why I have insisted that the whole transformation literature makes no sense. The unknowns are not prices and the average rate of profit; the unknowns are, and have to be, the value of the used up c, new value added and thus s/v. That is the mistake that Marx is claiming that he made in his transformation tables. By assuming that price was proportional to value, he assumed that he could determine from visible flow price data the value transferred; moreover, since wage goods could have sold above or below value, he had no way of knowing about much actual labor power the money wage could actually buy. If wage goods sold above value, he set s/v too high in his transformation tables; if below value, s/v should have been higher. But we never know what s/v is before we arrive at output prices. We infer what s/v is from price data and changes in s/v from time series. And even then the data are distorted and only allow guesses. We also cannot make a direct measure of the value of the used up means of production. We know however that its value is the SNALT it represents. And we know whatever the value of the used up c, the output has greater value than the input and that new value is redistributed through the formation of an average profit rate.

 I think of Marx's value theory as a form of retroduction or
inference to the best explanation (important differences between the
two that I cannot now remember). That is, features of capitalist
development such as concentration, centralization, the alternation
between prosperity and depression, and the onset of major general
crises that can only be resolved (if at all) politically are best
explained in terms of changes in social labor time relations and in
particular changes in the relationship between dead and living labor.

It's been a long time since I read Peter Lipton's book on inference
to the best explanation and Andrew Collier on retroduction. No time
now. But this is how I see it.

________________________

4. While Hahn questions the assumption of input and output prices as equal in order to enter demand considerations to close the equations, Giusanni, Freeman and others question that assumption in order to put technical change into the formalism.
_________________

Hahn is coming from intertemporal general equilibrium
position. Whatever one may think of the GE, one cannot
deny that it is a theory of prices. For the A-D model,
different time periods define different commodities,
and thus can have different prices. But these prices
are determined by the determinants other than prices.
That's why it qualifies to be a theory of prices. If
they determined prices of a commodity in time t on the
basis of observed prices of the same commodity in time
t-1, then it would not be a theory of prices but
rather be simple mumbo-jumbo, which is what TSS is.

TSS does not determine prices at t only on the basis of prices at t-1.



Hahn's critique of Sraffa on this score is not sound.
All Sraffa's equations are saying is that the rate of
profits is calculated on the basis of the replacement
coast of the physical capital items used up in
production. As far as technical change is concerned,
since technique of production is one of the
determinant of prices, a change in technique will
definitely explain change in prices, but it will be
the technique in use that must explain the prices at
any time.

Prices at any one time (t) are the same as prices at another time (t-1). After all, even before the full onset of the Industrial Revolution, Ricardo had already recognized that prices are changing daily.

Yours, Rakesh



Cheers, ajit sinha
 That seems to
 me to be the real
 fight--about how and why to drop the static
 assumption in the
 Sraffian formalism when it comes to studying actual
 capitalist
 economies, ie. when one is doing more than
 critiquing popular
 mythology about the productivity of capital and
 profit as just
 reward. Sen implicitly recognizes Hahn's point but
 pays no attention
 to the Marxian criticism. But that's where the
 action is.

 Rakesh












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