The problem with that is that it no longer matters where the $6 comes from once the original transaction is completed. Whether or not it comes from reselling the game has NO impact whatsoever on the original transaction.Ivo wrote:The $6 you would get can not simultaneously be bothThe fungibility means you can't distinguish money. You know you got $6 for this and $6 for that. You just don't know which buck came from where in that sense (obviously you can mark bills but that is not what the fungibility means). I thought I had been pretty clear that I only identify the X and Y at the respective times of purchase and after that it is lost in the fungibility property.
I'm not purposely trying to ignore the rest of your comments, but I'm very bad at making a clear and concise argument in written form. I'm going to try very hard to do that here, but I think it will help to clear away the existing clutter.
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The reason your examples don't stand up is not just because some agreement is present, or because time has passed since the transactions started. The problem is that in all of your analogies, you were involved in the transactions in some way from the very beginning. You were already involved when the hypothetical bank bought your hypothetical house--specifically for you. Beginning to end, you were a part of the process. It could not and would not have happened without you. You contributed (in some sense) even before you began to actually pay any money, because that was the entire point the whole time.
This could not be less true of your example of Player A and Player B. Player B had no role and no input into Player A's purchase of the game. Unlike your ongoing interactions with the bank or with your brother--which you were a part of from the beginning, Player A's interaction with the publisher via the original retailer are long since concluded--over with--done--finished--in the past, long before Player B entered the picture.
If Player A wants some of his money back, it no longer matters whether he gets it by selling the same game, a different game, or his left kidney. It makes absolutely NO difference where the money comes from. After the original transaction is completed, the purchased game is just an object in the player's possession. The money, like you say, is fungible. It can come from anywhere. If Player A gives the game to his kid brother for free and does something else to get the same amount of money as the trade-in value, it is exactly the same as if he had sold the game.
Player B is removed from Player A and the game publisher by two separate, essentially unrelated, over-and-done-with transactions that he had nothing to do with and cannot modify. Ever. Any attempt to describe Player B's money reaching the publisher by way of Player A is: A) imaginary, and purely academic; B) only useful to describe part of an economic ecosystem, not an actual contribution from Player B to the publisher, and; C) could be extrapolated to include the whole of the economy, not just the lifecycle of this one copy of the game. To that end, Player B has contributed to the game publisher in the same way as Starbucks, Ron Jeremy, the local teachers' union, Nabisco--and less so than Player A's employer.
Your bank/house analogy would be more relevant if Player B had come up to Player A in the store and said "hey, I want that game over there. If you buy right now for $60, three months from now I will give you $20 for it and flush an extra $30 of my own money down the toilet." I don't see that happening, and Player A would more than likely tell Player B to fuck off if it did.