From Magna Carta to Neural Rights: 800 Years of Cognitive Liberty

A right is not new because the technology is

It is tempting to think of "cognitive liberty" or "neural rights" as twenty-first-century inventions — something invented to address brain-computer interfaces and AI. They are not.

They are the latest articulation of a legal tradition that runs unbroken for eight centuries: the principle that the human person is sovereign over the human person, and that no power — royal, governmental, corporate, or technological — may erase that sovereignty without limit.

1215 — Magna Carta

The Great Charter limited a king's power to imprison, dispossess, or kill a free man without "the lawful judgment of his peers or by the law of the land." This is the origin of due process. Importantly for our subject, it established the principle that the person of the individual is not the property of the sovereign. Every later expansion of personal rights — bodily, mental, informational — flows downstream from this idea.

1689 — English Bill of Rights

Codified protections against cruel and unusual punishment, against excessive bail, and for free speech in Parliament. Established that some spheres of personal life are categorically off-limits to state power. The principle of inviolable personal spheres becomes the seedbed for later mental-privacy doctrines.

1789–1791 — U.S. Bill of Rights

The First Amendment protected speech, press, assembly, religion. The Fourth protected against unreasonable searches and seizures. The Fifth protected against self-incrimination. The Ninth retained unenumerated rights to the people. The Fifth and Ninth, in particular, are the roots of modern mental-privacy and unenumerated-cognitive-rights arguments.

1948 — Universal Declaration of Human Rights

Article 12: "No one shall be subjected to arbitrary interference with his privacy." Article 18: freedom of thought, conscience, and religion. Article 19: freedom of opinion and expression, including "the right to hold opinions without interference."

The phrase "the right to hold opinions without interference" — Article 19 — is the cleanest, oldest, and most international statement of cognitive liberty in positive law.

1966 — International Covenant on Civil and Political Rights (ICCPR)

Article 17: "No one shall be subjected to arbitrary or unlawful interference with his privacy." Article 19: "Everyone shall have the right to hold opinions without interference."

The ICCPR is binding on its signatories, including the United States.

1973–1989 — Domestic privacy and bodily autonomy

The U.S. line of cases recognizing constitutional privacy protections for personal decisions about body, family, and conscience. Each case extended the inviolable sphere a little further into the personal.

2017 — Bublitz, Lavazza, and the term "cognitive liberty"

Academic literature consolidates the modern term. The IEEE Brain Initiative, the Royal Society, and UNESCO begin issuing reports.

2021 — Chile

First country to constitutionalize neural rights.

2023 — UNESCO Recommendation on the Ethics of Neurotechnology

Adopted by 193 member states.

2024 — Colorado HB24-1058

First U.S. state to extend privacy protection explicitly to "neural data."

2026 — where we are

Courts in three U.S. circuits are hearing matters that will produce the first generation of binding cognitive-liberty case law in the United States. The doctrine that began at Runnymede in 1215 is being written into U.S. law for brain-state data.