"Tereza is staring at herself in the mirror. She wonders what would happen if her nose were to grow a millimetre longer each day. How much time would it take for her face to become unrecognizable? And if her face no longer looked like Tereza, would Tereza still be Tereza?"
The Unbearable Lightness of Being, Milan Kundera.

There is increasing concern amongst a wide range of commentators that human nature is in the process of being irrevocably changed by technological advances which either have been achieved or are in the pipeline. According to a multitude of op-ed writers, cultural critics, social scientists and philosophers, we have not faced up to the grave implications of what is happening. We are sleep-walking and need to wake up. Human life is being so radically transformed that our very essence as human beings is under threat.

Of course, apocalypse sells product, and one should not regard the epidemiology of panic as a guide to social or any other kind of reality. The fact that one of the most quoted panickers about the future is Francis Fukuyama, who has got both the past wrong (The End of History) and the present wrong (recovered neo-con Pentagon hawk), should itself be reassurance enough. Nevertheless, it is still worthwhile challenging the assumptions of those such as Fukuyama who are trying to persuade us to be queasy about the consequences of the various technologies that have brought about enhancement of human possibility and, indeed, want to call a halt to certain lines of inquiry, notably in biotechnology. [...]