Only a Sith deals in absolutes: A Jedi uses likelihood ratios

Arès, M. et Ostrum, R. B. (2026). Only a Sith deals in absolutes: A Jedi uses likelihood ratios. Journal of the American Society of Questioned Document Examiners, 27 (1). Article 3. ISSN 1524-7287 DOI 10.69525/jasqde.309

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Résumé

Abstract

This article explores the paradigm shift in forensic science from the use of definitive absolute conclusions to the application of Likelihood Ratios (LR). It discusses the advantages of LR, including fostering expert collaboration, upgrading the decision-making process, and integrating contradictory evidence. The paper argues that LR, similar to the Jedi approach, embraces complexity and uncertainty, providing a more nuanced and equitable framework for forensic analysis. In addition, we explore specific examples related to forensic handwriting examination to illustrate how LR can clarify and quantify the weight of handwriting comparisons, signature authenticity evaluations, and the examination of questioned documents.

Type de document:	Article
Date de dépôt:	09 avr. 2026 13:00
Dernière modification:	09 avr. 2026 13:00
Version du document déposé:	Version officielle de l'éditeur
URI:	https://depot-e.uqtr.ca/id/eprint/12804

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