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

>>1
There will be no humanity in 10000+ years, we'll be wiped out in about 100 years or less.  Looking that far forward in time is stupid anyway because you simply can't (singularity).