this post was submitted on 01 Jan 2024
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trying to answer with only my copy of capital in front of me (disclaimer: i might be completely and embarassingly wrong here)
use-value is something that fulfills a specific need (wool having a use-value in the production of yarn). it does not have to be a product of human labour, or be turned into a commodity, but it does need to have some sort of utility
exchange value is independent of utility. yarn here does not contain value by being tied to a specific type of labour (i.e. weaving), it only gains value from the general expenditure of labour-power, and by its social relation to other commodities
This is really good.
In defining exchange value, you point to the way that commodities gain value but I think it could be a little more exact. Apologies in advance for emoji use but I find it easier to follow visually.
Exchange-value is a relation between two commodities, e.g. “2 🍎 = 1 🍌”. That entire equation is an exchange value. This equation implies two things:
That third thing, the common substance is value. Value is the thing being expressed in an exchange value.
As an analogy, instead of exchange value and value, think about weight and mass. Mass is the substance of an object which is expressed through its weight. When you put two objects on a scale, you abstract from the qualitative difference of the things and consider them only as masses.
thank you for the explanation! the emojis really did help 🍎♥️🍌
i know I'm skipping ahead in our reading here, but do we still use the term exchange value when talking about money?
When Marx wants to emphasize that he is talking about money in particular, he will use the term price (exchange value in terms of the money commodity). But he will sometimes write exchange value when that distinction does not matter. He has a helpful tendency to repeat things, so he might say “such and such is the price, or exchange value with respect to money, of so-and-so…”