I'm not defending musk or neuralink in the slightest but I did watch their presentation because I was bored and sick. I don't care what musk and his employees say about the tech but it's still a generation, at least, off from being fully main stream. They say severed spines will require at least, maybe more depending on severity, two implants. One brain and one or more into the spinal cord where the implants will communicate wirelessly. Their short term explanation of how to handle vision is to use an external camera. Maybe a headband or something similar to those 'spy' sunglasses with a camera built in. The camera will then communicate to a middle device (cell phone or other aux device) then that communicates to the implant. That's what was presented so I'm passing it on. I have no other answers on. The live pig experiment that they showed on them controlling muscle movements was a bit off putting and their quick discussion of their server/data center infrastructure to support. Pretty messed up.