Monitoring of people's mental states by measuring their brainwaves is close to the point of threatening cognitive liberty. We need to defend it.

The threat to cognitive liberty is not new. Brainwashing systems, such as applied in China (and especially to the Uygurs in Xinjiang) attack cognitive liberty. The US, Canada and some other countries set up brainwashing systems to apply to indigenous children. Disinformation campaigns existed before computers.

However, supporting brainwashing with monitoring of subjugated people's individual mental states makes the threat harder to resist.

These systems depend inherently on makng them use nonfree malware or else devices that are imposed on them.