Mind-controlled prosthetic arm from Segway inventor gets FDA approval

This one has some comments:

https://news.ycombinator.com/item?id=7726128 (businessweek.com)

Others:

https://news.ycombinator.com/item?id=7724114 (makezine.com)

https://news.ycombinator.com/item?id=7724164 (fda.gov)

https://news.ycombinator.com/item?id=7724861 (engadget.com)

https://news.ycombinator.com/item?id=7727600 (theverge.com)