How it works is Caplan pays Yudkowsky $100 in 2017 (when the bet began). If humanity is still living on the surface on the Earth in 2030 then Caplan owes Yudkowsky $200 plus 5% annual interest. See here for details.
Typo/​Transpositional error: Yudkowsky owes Caplan 200$ plus 5% annual interest.
Typo/​Transpositional error: Yudkowsky owes Caplan 200$ plus 5% annual interest.
Fixed. Thanks.