%A Paul Franceschi %J Canadian Journal of Philosophy %T The Doomsday Argument and Hempel's Problem %X English translation of a paper originally pupblished in French in the Canadian Journal of Philosophy under the title 'Comment l'urne de Carter et Leslie se d?verse dans celle de Hempel'. In this paper, I present firstly a solution to Hempel's Problem. I recall secondly the solution to the Doomsday Argument described in my previous Une Solution pour l'Argument de l'Apocalypse (Canadian Journal of Philosophy 1998-2) and remark that both solutions are based on a similar line of reasoning. I show thirdly that the Doomsday Argument can be reduced to the core of Hempel's Problem. %N 1 %K Hempel's Problem, Doomsday Argument, reference class problem %V 29 %D 1999 %L cogprints2172