Pacific Philosophical Quarterly 79 (1):34-58 (1998)

Abstract
In the exchange paradox, two players receive envelopes containing different amounts of money. The assignment of the amounts ensures each player has the same probability of receiving each possible amount. Nonetheless, for each specific amount a player may find in his envelope, there is a positive expectation of gain if the player swaps envelopes with the other player, in apparent contradiction with the symmetry of the game. I consider a variant form of the paradox that avoids problems with improper probabilities and I argue that in it these expectations give no grounds for a decision to swap since that decision must be based on a summation of all the expectations. But this sum yields a non‐convergent series that has no meaningful value. The conflicting recommendations – that it is to one or the other player's advantage to swap – arise from different ways of grouping terms in the sum that yield an illusion of convergence. I describe a generalized exchange paradox, explore some of its properties and display another example.
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DOI 10.1111/papq.1998.79.issue-1
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Waging War on Pascal’s Wager.Alan Hájek - 2003 - Philosophical Review 112 (1):27-56.
Opening Two Envelopes.Paul Syverson - 2010 - Acta Analytica 25 (4):479-498.

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