What is a robotic prosthetic arm developed by Neuralink led by Elon Musk

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Neuralink, which was launched by Elon Musk, has determined that the primary target for research and development will be to provide patients with robotic prosthetic limbs that move at will with only signals from the brain to patients who have lost movement of their hands and feet.

Will there really come a day within a few years where people who lived in wheelchairs can freely walk around the city?