Artificial Intelligence, Mindreading, and Reasoning in Law

  • John A. Barnden
  • Donald M. Peterson
Part of the Studies in Fuzziness and Soft Computing book series (STUDFUZZ, volume 94)


One aspect of legal reasoning is the act of working out another party’s mental states (their beliefs, intentions, etc.) and assessing how their reasoning proceeds given various conditions. This process of “mindreading” would ideally be achievable by means of a strict system of rules allowing us, in a neat and logical way, to determine what is or what will go on in another party’s mind. We argue, however, that commonsense reasoning, and mindreading in particular, are not adequately described in this way: they involve features of uncertainty, defeasibility, vagueness, and even inconsistency that are not characteristic of an adequate formal system. We contend that mindreading is achieved, at least in part, through “mental simulation,” involving, in addition, nested levels of uncertainty and defeasibility. In this way, one party temporarily puts himself or herself certainly in the other party’s shoes, without relying wholly on a neat and explicit system of rules.


Supra Note Legal Reasoning Folk Psychology Legal Domain Defeasible Reasoning 
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Copyright information

© Physica-Verlag Heidelberg 2002

Authors and Affiliations

  • John A. Barnden
  • Donald M. Peterson

There are no affiliations available

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