zabu of nΩd;9817994 said:
I am really struggling to see how you can conclude that use value is only realized by exchange value. Maybe you're speaking from a much better understanding of these terms than I am, but the way I interpret what you're saying is that there is no commodity in existence that has value anywhere until it is exchanged. It seems perfectly obvious to me that something like food is always valuable to a person regardless of whether they produce it themselves or they produce non-food items which they in turn exchange for food.
Keep in mind as well that I'm speaking within the parameters of a capitalist system.
Objects/items/etc. are not inherently useful, because useful is an egomorphic, Human-oriented term. Say we have a hamburger sitting in front of us, on a bun, with lettuce, tomato, the whole deal. We understand that object on the basis that it is potential food/sustenance for us. It's useful to us because we need food.
This use-value is not a character trait of the object itself. It's a trait we, as humans in need of it, attribute to it. It alone (w/o humans) does not have the use-value of food.
Now, let's not get so anti-humanist. Say there are still people and the burger is in demand. People are hungry, they need food. A burger possesses no use-value for its owner who is willing to sell it; otherwise s/he would not sell it. It only possesses use-value for those who are willing to buy it. Therefore, an exchange must take place, and this exchange must take place
before any use-value of the burger is realized. The buyer must put something up in exchange for the burger, something that is accepted as equal in value to the burger: money. Does money possess the use-value of a burger? No, not at all. Something that is utterly different from an item's use-value is being realized during this exchange, and Marx qualifies it as the exchange-value.
This exchange value functions as a symbol, and commodities must be dealt with as this value before they can be consumed as a use-value. When you buy a burger, you don't say: "That burger is the equivalent of my hunger's needs" (or, you might, but that won't get you anywhere). You have to say: "That burger is the equivalent of $1.99" (or whatever). You equate $1.99 with your hunger, but this is an arbitrary, merely symbolic equation. You have to recognize the product as an exchange-value before you can realize its use-value.