Vicarious Liability for AI

18 Pages Posted: 24 May 2021 Last revised: 8 Jan 2024

Date Written: May 20, 2021

Abstract

When an algorithm harms someone—say by discriminating against her, exposing her personal data, or buying her stock using inside information—who should pay? If that harm is criminal, who deserves punishment? In ordinary cases, when A harms B, the first step in the liability analysis turns on what sort of thing A is. If A is a natural phenomenon, like a typhoon or mudslide, B pays, and no one is punished. If A is a person, then A might be liable for damages and sanction. The trouble with algorithms is that neither paradigm fits. Algorithms are trainable artifacts with “off” switches, not natural phenomena. They are not people either, as a matter of law or metaphysics.

An appealing way out of this dilemma would start by complicating the standard A-harms-B scenario. It would recognize that a third party, C, is usually lurking nearby when an algorithm causes harm, and that third party is a person (legal or natural). By holding third parties vicariously accountable for what their algorithms do, the law could promote efficient incentives for people who develop or deploy algorithms and secure just outcomes for victims.

The challenge is to find a model of vicarious liability that is up to the task. This chapter provides a set of criteria that any model of vicarious liability for algorithmic harms should satisfy:

1. Identify which third party or parties will be liable
2. Be robust enough to avoid gamesmanship
3. Give efficient incentives to all parties involved
4. Produce fair outcomes
5. Have low barriers to implementation
6. Promote programming values, like interpretability

Though relatively few in number, the criteria are demanding. Most available models of vicarious liability fail them. Nonetheless, the chapter ends on an optimistic note. The shortcomings of the models considered below hold important lessons for uncovering a more promising alternative.

Keywords: Artificial Intelligence, AI, Law and Tech, Corporate Liability, Legal Theory, Tort Law, Criminal Law, Consumer Protection

Suggested Citation

Diamantis, Mihailis, Vicarious Liability for AI (May 20, 2021). 99 Indiana L.J. 317 (2023), Available at SSRN: https://ssrn.com/abstract=3850418

Mihailis Diamantis (Contact Author)

University of Iowa - College of Law ( email )

Boyd Law Building, rm. 442
Iowa City, IA 52242
United States

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