 I came to you with this essay with the whole question about where is consciousness? I mean, the problem of what is consciousness, of course, that's the big one, isn't it? But where is it? It may be easier to answer than what it is. I think we all have an idea of what we think it is, but if we try and explain what that is, it becomes really quite complicated. And just to be sort of quick on that point, what I ended up coming up with was a thing that I called the if.