Here is a quote from Calvino’s description of Euphemia, page 36. We’ve inserted our concept in bold:
You do not come to Euphemia only to buy and sell, but also because at night, by the fires all around the market, seated on sacks or barrels or stretched out on piles of carpets, at each word that one man
sees on his tin can
— such as “wolf,” “sister,” “hidden treasure,” “battle,” “scabies,” “lovers” — the others tell, each one, his tale of wolves, sisters, treasures, scabies, lovers, battles…
through his tin can, among the endless network of strings, under the starry night sky…
…And you know that in the long journey ahead of you. when to keep awake against the camel’s swaying or the junk’s rocking. you start summoning up your memories one by one, your wolf will have become another wolf, your sister a different sister, your battle other battles, on your return from Euphemia, the city where memory is traded at every solstice and at every equinox.