Brains working towards machine consciousness

I tend to believe nothing is impossible.  Well, I say believe but it is more 'hope', really.  Richard H., colleague, friend and general loon, pointed out to me the other day that:

If nothing is impossible then
there is a finite possibility that something has a probability of 0, i.e. that something is impossible. 

Bother.  The fact that something can be impossible means that it is not true that nothing is impossible.