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How is non-knowledge represented in economic theory?

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  • Ekaterina Svetlova

    (Karlshochschule International University)

  • Henk van Elst

    (Karlshochschule International University)

Abstract

In this article, we address the question of how non-knowledge about future events that influence economic agents' decisions in choice settings has been formally represented in economic theory up to date. To position our discussion within the ongoing debate on uncertainty, we provide a brief review of historical developments in economic theory and decision theory on the description of economic agents' choice behaviour under conditions of uncertainty, understood as either (i) ambiguity, or (ii) unawareness. Accordingly, we identify and discuss two approaches to the formalisation of non-knowledge: one based on decision-making in the context of a state space representing the exogenous world, as in Savage's axiomatisation and some successor concepts (ambiguity as situations with unknown probabilities), and one based on decision-making over a set of menus of potential future opportunities, providing the possibility of derivation of agents' subjective state spaces (unawareness as situation with imperfect subjective knowledge of all future events possible). We also discuss impeding challenges of the formalisation of non-knowledge.

Suggested Citation

  • Ekaterina Svetlova & Henk van Elst, 2012. "How is non-knowledge represented in economic theory?," Papers 1209.2204, arXiv.org.
    • Handle: RePEc:arx:papers:1209.2204
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    References listed on IDEAS

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    Cited by:

    1. Diane Wilcox & Tim Gebbie, 2013. "Factorising equity returns in an emerging market through exogenous shocks and capital flows," Papers 1306.5302, arXiv.org, revised Jul 2013.

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