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Learning and Discovery

Author

Listed:
  • Simon Grant

    (Department of Economics, Rice University)

  • John Quiggin

    (Department of Economics, University of Queensland)

Abstract

We formulate a dynamic framework for an individual decision-maker within which discovery of previously unconsidered propositions is possible. Using a standard game-theoretic representation of the state space as a tree structure generated by the actions of agents (including acts of nature), we show how unawareness of propositions can be represented by a coarsening of the state space. Furthermore we develop a semantics rich enough to describe the individual's awareness that currently undiscovered propositions may be discovered in the future. Introducing probability concepts, we derive a representation of ambiguity in terms of multiple priors, reflecting implicit beliefs about undiscovered proposition, and derive conditions for the special case in which standard Bayesian learning may be applied to a subset of unambiguous propositions. Finally, we consider exploration strategies appropriate to the context of discovery, comparing and contrasting them with learning strategies appropriate to the context of justification, and sketch applications to scientific research and entrepreneurship.

Suggested Citation

  • Simon Grant & John Quiggin, 2005. "Learning and Discovery," Risk & Uncertainty Working Papers WP7R05, Risk and Sustainable Management Group, University of Queensland.
    • Handle: RePEc:rsm:riskun:r05_7
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    File URL: http://www.uq.edu.au/rsmg/WP/WPR05_7.pdf
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    References listed on IDEAS

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    7. Eichberger, Jurgen & Grant, Simon & Kelsey, David, 2007. "Updating Choquet beliefs," Journal of Mathematical Economics, Elsevier, vol. 43(7-8), pages 888-899, September.
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    Citations

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    Cited by:

    1. Grant, Simon & Kline, Jeff & Quiggin, John, 2006. "Lost in Translation: Honest Misunderstandings and Ex Post Disputes," Risk and Sustainable Management Group Working Papers 151177, University of Queensland, School of Economics.
    2. Simon Grant & John Quiggin, 2013. "Inductive reasoning about unawareness," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 54(3), pages 717-755, November.
    3. Halpern, Joseph Y. & Rêgo, Leandro C., 2009. "Reasoning about knowledge of unawareness," Games and Economic Behavior, Elsevier, vol. 67(2), pages 503-525, November.
    4. John Quiggin, "undated". "Complexity, Climate Change and the Precautionary Principle," Climate Change Working Papers WPC07_3, Risk and Sustainable Management Group, University of Queensland.
    5. Quiggin, John, 2008. "Risk Shifts in Australia: Implications of the Financial Crisis," Risk and Sustainable Management Group Working Papers 151520, University of Queensland, School of Economics.

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    More about this item

    JEL classification:

    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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