Author: Nita Farahany Source: https://nitafarahany.substack.com/p/protecting-autonomy-in-law-take-1 Published: January 23, 2026
This essay, published January 23, 2026 by Nita Farahany, is the doctrinal predicate for her Advanced Topics in AI Law and Policy course (Class 1.3 of roughly 30). It catalogs the four legal vocabularies US law uses to protect cognitive autonomy and argues that each is structurally mismatched to ambient, algorithmic, platform-scale influence.
Summary of argument
Farahany maps four bodies of US doctrine that touch cognitive autonomy and argues that none was designed for continuous, multi-actor, ambient influence. Each presupposes a discrete decision moment, an identifiable counterparty, and a defined intervention — the conditions that algorithmic environments do not satisfy. She frames cognitive liberty as a synthesis intended to supplement, not replace, these existing vocabularies.
The four legal vocabularies for autonomy
- Informed consent (medical and research law) assumes a discrete decision moment, a defined intervention, and a counterparty with disclosure obligations. It is built for one-off transactions rather than continuous environmental shaping.
- Capacity (contracts and wills) is a binary status determined by competence at the moment of decision. It does not capture gradations or population-level erosion.
- Undue influence (estates and elder law) recognizes that close relationships can override genuine preference. Farahany treats it as the closest analog to algorithmic influence, but notes it requires identifying a specific influencing actor with a specific motive.
- Competency (criminal procedure) protects against state coercion of testimony, but only at the trial stage and only against the government.
Farahany argues that none of the four was designed for ambient influence at scale: each presupposes a moment, a counterparty, and a discrete intervention, whereas algorithmic environments are continuous, multi-actor, and ambient.
Cognitive liberty as a synthesis
Farahany argues the existing vocabularies need to be supplemented, not replaced, by a framework that recognizes a right to self-determination over the substrate of decision-making itself — a right to mental privacy, freedom of thought, and self-determination in cognition. This is the cognitive liberty concept the course develops.
Place in the course
The essay sets up the remainder of the course, in which each subsequent week tests how a particular legal regime handles a particular form of cognitive influence and where each runs out of vocabulary. The topics include attention, dark patterns, AI companions, persuasion, consent, child safety, the Fifth Amendment, and the First Amendment.
Relationships
- part-of: Nita Farahany Advanced Topics course (Class 1.3 of ~30)
- introduces: Cognitive Liberty
- related: Three Privacy Problems AI Creates
- previous: Inside My Advanced Topics Class 1.2: What AI Does To Your Thinking (Farahany, January 2026) next: Inside My Advanced Topics Class 2: Can You Pay Attention? (Farahany, January 2026)