There's an extremely interesting question that seems to me to be very urgent: how on earth is science going to cope with the accumulation of data, on a huge scale, of recent years. This relates to another question that hasn't been given enough attention in recent years: when on earth is biology going to become a quantitative science, like physics and chemistry - when there's good evidence to believe that it can't make progress in some fields without becoming much more quantitative.

The dangerous question is what happens when people start doing it to themselves - to people. For what it's worth, in Britain and many other countries, it's against the law to do this; it's a criminal offense to manipulate the human embryo beyond 14 days of life, and it's in fact a criminal offense to do so without the approval of a licensing authority. How effective that interdiction would be in other countries is anybody's guess. My guess is that countries like Morocco, which has been in the vanguard of sex change operations for many, many years will be in the vanguard of people cloning. So in that spirit, it's a question of waiting to see how the technology works out, and trying to get some kind of international understanding on the circumstances where it would make a lot of sense.