I am having trouble identifying a short story that I have read a while ago. It is about the definition of economics in a future where all necessary goods are abundant/readily available. The story is written as a dialogue with (afaik) no external context given, so my interpretation that it is set in the future may just stem from the fact that we're not yet living in a world of abundant goods. Anyway, in the story, the meaning of economics has shifted from the study of distributing scarce goods to the study of creating scarce goods.
The two characters go on and introduce some examples of such created scarce goods. One of them is, if I remember correctly, that they eliminate some kind of fruit, except for a few cases that they have hidden away inside wooden enclosures, which makes them scarce and thereforce precious luxury goods. Also, most of the remaining pieces of fruit are worm-ridden or otherwise inedible, which only means that the bad fruit is still scarce and valuable, but not as valuable as the few remaining good pieces. The creations are all rather horrible acts and one person is disgusted.
The story also mentions that the definition of economics started a very long time ago as the study of the distribution of a single turnip. (I am not sure if it really was a turnip, though.)
I do not recall the title or author of this story and cannot find it. Does any of you perhaps know its author and title?