Rumor spreads Diego was seen with another vendor. Lucía stops talking. He sends a messenger with a jar of pickled onions (her favorite) →

This is the turning point. After several transactions, one party sends a sticker that is not from a popular public pack. It’s an obscure sticker—perhaps an old meme, a character from a cult TV show, or a poorly drawn animal with a specific local phrase. This is a test. If the other party recognizes it or, better yet, responds with an equally obscure sticker, an “in-group” is formed. The mercado is no longer a public square; it has become a private inside joke. This is the moment a transactional contact transforms into a relational connection .