If the brain is likened to an advanced biological computer, then if it wants to work normally, it also needs to have the most basic input and output systems.

Brain doctors must first solve the "input system" is actually in line with everyone's wishes. After all, if you can see and hear, stimulate the brain, and produce the simplest "yes" and "no" reflexes, you can do at least a little something happened.

Even if it's just a brain living in a culture vessel, at least

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