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Newcomb's Problem: The $1,000,000 Solution

Published online by Cambridge University Press:  01 January 2020

Kent Bach
Kent Bach*
Affiliation:
San Francisco State University, 1600 Holloway Ave., San Francisco, CA94132, U.S.A.
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Extract

The more you think about it, the more baffling Newcomb's Problem becomes. To most people, at first it is obvious which solution is correct (not that they agree on which one), but their confidence can be eroded easily. Only a puzzled few are torn between the two right from the start, and for years so was I. But at last, thanks to a certain metaargument, one solution came to seem obvious to me. And yet, imagining myself actually faced with Newcomb's choice, I started to worry that I might experience just enough last-minute ambivalence to unsettle my confidence in that argument. Fortunately, I have found a strategy to ensure making the right choice when the chips are down.

Not only is Newcomb's Problem puzzling in its own right, it is philosophically significant. The appeal of both solutions reflects a conflict between two plausible conceptions of rational choice. In making a decision, should one consider all of its probabilistic consequences or only its causal consequences? Each conception has its supporters, but some philosophers find them both defensible and see no hope of resolving the conflict. I think the conflict can be resolved, at least in the context of Newcomb's Problem, by properly assessing the relevant counterfactual conditionals.

Type
Research Article
Information
Canadian Journal of Philosophy , Volume 17 , Issue 2 , June 1987 , pp. 409 - 425
Copyright
Copyright © The Authors 1987

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References

Bennett, Jonathan ‘Counterfactuals and Temporal Direction,’ Philosophical Review 93 (1984) 57–91CrossRefGoogle Scholar
Eells, Ellery Rational Decision and Causality (Cambridge England: Cambridge University Press 1982)CrossRefGoogle Scholar
Gardner, Martin ‘Mathematical Games,’ Scientific American 30 (1973) 104–8CrossRefGoogle Scholar
Gibbard, Alanand Harper, William ‘Counterfactuals and Two Kinds of Expected Utility,’ in Hooker, C. A. Leach, J. J. and McClennen, E. F. eds Foundations and Applications of Decision Theory (Dordrecht Holland: Reidel 1978), 125–62Google Scholar
Jeffrey, Richard ‘The Logic of Decision Defended,’ Synthese 48 (1981) 473–92CrossRefGoogle Scholar
Leeds, Stephen ‘Eells and Jeffrey on Newcomb's Problem,’ Philosophical Studies 46 (1984) 97–107CrossRefGoogle Scholar
Levi, Issac ‘Newcomb's Many Problems,’ in Hooker, C. A. Leach, J. J. and McClennen, E. F. eds Foundations and Applications of Decision Theory (Dordrecht Holland: Reidel 1970), 369–83.Google Scholar
Lewis, David ‘Prisoner's Dilemma Is a Newcomb Problem,’ Philosophy and Public Affairs 8 (1979) 235–40Google Scholar
Lewis, David ‘Causal Decision Theory,’ Australasian Journal of Philosophy 59 (1981) 5–30CrossRefGoogle Scholar
Nozick, Robert ‘Newcomb's Problem and Two Principles of Choice,’ in Nicholas, Rescher et al., eds Essays in Honor of Carl G. Hempel 114–46 (Dordrecht Holland: Reidel 1970)Google Scholar
Nozick, Robert ‘Reflections on Newcomb's Problem,’ Scientific American 31 (1974) 102–8Google Scholar
Olin, Doris ‘Newcomb's Problem, Dominance and Expected Utility,’ in Hooker, C. A. Leach, J. J. and McClennen, E. F. eds., Foundations and Applications of Decision Theory (Dordrecht Holland: Reidel 1978), 385–98Google Scholar
Rawls, John ‘Two Concepts of Rules,’ Philosophical Review 64 (1955) 3–32CrossRefGoogle Scholar
Schlesinger, George N. Religion and Scientific Method (Dordrecht Holland: Reidel 1977).CrossRefGoogle Scholar
Schlesinger, George N. Aspects of Time (Indianapolis: Hackett 1980).Google Scholar
Scriven, Michael ‘An Essential Unpredictability in Human Behavior,’ Wolman, B. B. and Nagel, E. eds in Scientific Psychology: Principles and Approaches (New York: Basic Books 1964), 411–25Google Scholar