Habeas Mentem: the right to understand

For centuries, habeas corpus said something simple: power cannot take your body without accounting for it. Nobody holds you without a judge looking.

Today the pressure point has moved. Power no longer needs to hold the body. It is enough to occupy attention, shorten time, steer judgment. It does so without violence, through screens, notifications, forms and default settings. This is where the idea I have been working on for years comes from: Habeas Mentem.

The fiction holding everything up

Contract law, privacy and consumer protection rest on a silent presumption: if I informed you, you understood. If you clicked, you decided. I call it the presumption of understanding.

For a long time it was a reasonable fiction. Documents were few, choices were slow, and whoever signed had time to read or to ask. Today we accept dozens of terms a month without reading a single one. Not out of laziness, but because the environment in which we choose is designed to keep us moving, not to help us understand.

A fiction that no longer survives contact with reality stops being a legal fiction. It becomes an alibi.

Five invasions

Habeas Mentem is the right to understand, judge and decide in conditions not designed against us. To make it concrete, I have tried to name the points where the mind gets invaded. There are five.

Attention, when an interface is built to capture it rather than serve it.

Understanding, when the information is there but arranged so that nobody grasps it.

Time, when a decision is squeezed into a few seconds, with a countdown or a flashing button.

Judgment, when options are framed so that only one looks reasonable.

Reversibility, when getting in costs one click and getting out costs a week.

Taken one by one, none of these invasions is clearly unlawful. Together they produce consent that has the legal form of will and the substance of a reflex.

Reversing the burden

The core proposal is one: shift the burden. Today the reader has to prove they were misled. I believe that when a choice environment is designed by the party that benefits from it, the designer should have to prove that the environment actually allows people to understand.

This is not abstract. It is the same principle by which the carmaker, not the driver, has to prove the brakes work. I call it the engineer's test: if you can measure how many people click a button, you can also measure whether they understood what they were accepting. If you choose not to, that is a choice.

There is also a limit I set myself. Understanding can be measured; the mind cannot be read. The law should not enter people's heads to protect them. It should look at the environment in front of them and ask whether it was built for them or against them.

European law is already moving this way, in pieces. The GDPR requires information "in a concise, transparent, intelligible and easily accessible form". The Digital Services Act bans interfaces that deceive or manipulate users. What is still missing is a principle that holds the pieces together. Habeas Mentem tries to be that principle.

The book is nearly finished. On this site I will share the journey, the objections I receive and the tools we are building to move from principle to proof.