The Jeonse Number That Is Not on the Contract
Disclosure: this post was written with the assistance of an AI system (Claude), which wrote the analysis code, ran the experiments and drafted the text. The topic, the constraints, the data choices and the final review are the author’s. Under Korea’s jeonse system a tenant hands the landlord a lump sum worth half to four fifths of the home, pays no monthly rent for two years, and receives it back at the end....