You have to have your skull opened up just so you can control a mouse on the screen? There is no market for a device like this.

Another Tesla scam to keep pulling in the federal funding. Literally no one is going to put this thing in their brain.

This is Strange Days technology in nascent form. They claim they won't allow advertising apps but that seems an obvious application. What if you could taste a product before buying it? Maybe you could even override sensations with custom ones. Those sorts of things would probably be many years away. Musk envisions creating super intelligent humans to compete with AI but it will probably end up being used as a replacement for drugs.