Video game controlled by the mind

It works with electrodes connected to the brain…, but connected inside the brain!! American engineers have created a system to control the movements of a video game by means of orders of the brain transmitted across electrodes.

Obviously, the scientific engineers indicated that these computers would benefit paralyzed persons or victims of accidents and would help them to work, to read, to write and up to moving in short distances…, but for me, the most incredible was the end of the article: "After a few sessions, the patients could play by means of signs that came of the surface of their brains. They achieved a precision of between 74 and 100 per cent. One of them succeeded 33 targets of a consecutive way."

Paralyzed persons playing to achieve targets? Maybe to paralyze more people?