But I think it is a serious issue to wonder about the other platonic absolutes of say beauty and morality.

So what I'm saying is why don't we think about changing Schrodinger's equation at some level when masses become too big at the level that you might have to worry about Einstein's general relativity.

As you say, the way string theory requires all these extra dimensions and this comes from certain consistency requirements about how string should behave and so on.

People think of these eureka moments and my feeling is that they tend to be little things, a little realisation and then a little realisation built on that.

Some people take the view that the universe is simply there, and it runs along - it's a bit as though it just sort of computes, and we happen by accident to find ourselves in this thing. I don't think that's a very fruitful or helpful way of looking at the universe.

I think that I'm serious, but I don't think that I'm inordinately bleak.