Elon Musk expects Neuralink's brain chip to begin human trials in 6 months

> The first two human applications targeted by the Neuralink device will be in restoring vision and enabling movement of muscles in people who cannot do so.

Both of these applications have already been realized to some extent...

Arm movement... https://youtu.be/OHsFkqSM7-A

Vision... https://secondsight.com https://youtu.be/AISQvV0ifYw

That kind of automation and pace of improvement is needed for knee surgical repair using bioregrowth technology to avoid knee replacement.