scifi levels - looking for link of article

Can anyone help me? I remember having read an article somewhere on the internet about the different stages of science fiction / free thinkers. I've tried searching, but to no avail. I only know that there were four stages and that the last, fourth category was about science fiction thinkers who think really far into the future..how earth, humanity, technology etc will be in 10000+ years. anyone know what I'm talking about? :o

>>13
Since there are infinite things that I could imagine, but which have no proof to back them up ergo...

1/infinity = 0

...therefore I should not believe in things which have no proof to suggest they occur.

I can tell you are a liberal. Put it this way, there are loads of religions and they all say "the other religions are devils trying to trick you", which one should I believe in?