Many people decry a time when man may merge with machine. Currently replacement of body parts is only done when someone is seriously injured such as an accident or in war. So far there is not a lot of talk about these issues and the technology and Bio Ethics debate, but you can hear some rumblings out there. Are people scared of the future? Many believe they are, especially as the replacement parts are better than the original. Maybe not better, but will last longer, be stronger and provide better performance.