Well, im only up to section 2 in chap 3 so far that is!!
Marx states in fairly unequivocal terms in chapter one that the "substance of value is labour, the magnitude of value is labour time". Hence the value of gold is explained in terms of the amount of labour time required to extract it from the earth and that consequently its value has nothing to do with the substance of the object itself. This is quite different from standard accounts of precious metals value deriving from their rarity.
In a similar vein, Marx seems to explain the higher price of skilled labour as being reducable to a commensurable amount of labour time with more simple forms of human labour. So complex labour when simplified takes up more time as what at first face seemed like the same amount of human labour. ( I think L-bird elsewhere if i remember correctly also quieries how this reduction gets made)
However, in chapter 3 section one, Marx accounts for things that manifestly do not have labourtime congealed but becoming commodities on the market and having a price. This part follows after a discussion whereby he argues that price corresponds as a marker of the equivalent value of the money commodity.
Does this bit therefore not undermine the notion of labour as being the sole source of value by showing that things can for whatever reason are acclaimed in society on their own merits and consequently acquire a value form?
Also, another part of chapter 3 section 1-2 intrigued me. It states that " if societies need for linen has already been satisfied by the products of rival weavers -and such a need has a limit - our friends product is superfluous, redundant and consequently useless".
If as Marx states that "such a need has a limit", then could it not follow that as said limit draws closer, coupled with the need of a producer to sell their products, that its price or value would diminish. If so, does this not take us into the territory of diminishing marginal utility theory?
Now, i'd be the first to admit that i know fuck all about anything - especially economics - but the above does appear to fit in nicely with the Oxford Dictionary of Economics definition of marginal utility which states that it is "the addition to an individuals utility from a small increase in the consumption of any good per unit of the increase. It is usually assumed that, at least beyond a certain point, the marginal utility of a particular good decreases as more is consumed".
So am i wrong in my original thinking that for Marx value is solely about labour, or is their another reading that allows for other inputs of value such as rarity, marginal utility, subjective needs of people etc?



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Hiya, xslavearcx, thanks for naming me again, so I that get dragged into this mire again!
On the above, it seems to me that you're confusing Marx's 'society' with the marginal utility theorists' 'individual', when it comes to 'value'. Marx talks of 'society's need', not 'individuals' needs'. The ODE quote you've used makes this clear with "the addition to an individuals utility...".
Don't forget, if the 'socially necessary labour time' to produce a given commodity falls, then all previously produced commodities of that type lose 'value'. 'Value' is measured by what is 'necessary' now for society. 'Value' is a social relationship, not something in a commodity.
Remember my analogy about HMS Dreadnought? Day before launch, British navy had dozens of powerful battleships; day after launch, British navy had one powerful battleship and dozens of floating scrap metal candidates. 'Naval Power' embodied in those ships had diminished, because 'Naval Power' is measured against current standards.
And so it is with 'value' - that's why I call it 'social-value'.
Let's leave it to the experts to explain properly, eh? I know I'll get told-off for forgetting some obscure passage in Volume 7, written in Serbo-Croat by a good friend of Engels' mother-in-law, who discovered the lost manuscript in.... snore