I'm glad you asked that question. It allows me to elaborate on a topic that I've just brought up, and that's the importance of education. It really is the crux of the matter.
I think we can all agree that our education in science, especially at the elementary school level and the high school level, is not what it should be. There are students who can graduate from high school without ever having had a whole course in chemistry or physics or biology, and yet they will eventually become consumers. They will use chemistry from morning until night, and will be asked to make decisions about things like phthalates and bisphenol A--very complex issues--without having the background.
So yes, I'm certainly in favour of more and more education. I do agree that there has been an overemphasis on risks in life. I see this on a daily basis. I get literally dozens of phone calls and e-mails through my office every day. My impression is that people are so worried about dying, they're forgetting about living. They're focusing in on minor things.
Of course, as our analytical capabilities get better and better, there will be more and more things to worry about. Eventually we find that everything is contaminated by everything else, when we get down to the level of parts per trillion.
We do need to bring some rational thinking into this and to make decisions based upon the available evidence. I think it is important to get the message across that there's no such thing as a risk-free society. It is always a question of evaluating risks and evaluating them against the benefits.
When we look to exercise the precautionary principle, that is motherhood and apple pie; of course we want to do that. But we also have to look at the other side--namely, what is the risk of exercising the precautionary principle? If we're going to replace one substance with another, are we absolutely sure that the other substance has been properly evaluated?