Transhumanism is a term given to the movement seeking to develop and implement varied technologies that can either replace or augment the biological components of our human bodies - and maybe even our minds. While it sounds like science fiction, it is real and is it progressing. It's a wonderful thing to be able to offer bionic limbs and the like, restoring physical function to people who currently do not have it, or are impaired. There is also research into technologies to help profoundly disabled people, such as scientist Stephen Hawking - now almost completely immobile - to interact by directly using his mind (his thoughts, in effect). When thought through to it's logical conclusion, it perhaps brings up the question on what it is to be human at all, if we are facing a world where computer/mechanical/human hybrid beings may exist among us.