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. "better, faster, stronger!”
Regarding the replacement of body parts which are not working or have been failed in the human body, soon we will have choices of re-generation due to advances in BioTech, stem cell and other methods being theorized and researched with nanotech, enzyme, protein, RNA, DNA therapy and switching.
If you can get a Bionic Eye like Steve Austin or a Bionic
"Lance Winslow" - Online Think Tank forum board. If you have innovative thoughts and unique perspectives, come think with Lance; http://www.WorldThinkTank.net/wttbbs/