E.g. Swiss company used brain/tech interface approach to help a paralysed man walk again just last year
https://bbc.co.uk/news/science-environment-65689580
Not that I'm accusing Musk of seeing other people's achievements and saying "ACTUALLY, I DID THAT!" Perish the thought...
/7
BBC NewsBrain implants help paralysed man to walk againA paralysed man has been able to walk simply by thinking about it, thanks to electronic brain implants