I think it's only a matter of time before cybernetics become common. I would say give it another 50 years. I saw this implant a couple of months back. It's called North Sense. You have it pierced to you chest, and it's suppose to vibrate (something to those affects) every time you face north. Its a very simple concept, but it adds so much depth and meaning to ones life. This is just the beginning of a lot of other cool wearable/implantable technology that will enhance human existence.