>no other sentient creatures on Earth because humans will destroy them. ... Let's not forget neanderthals as well in this context.
True and false. The most "advanced" humans of any given time have destroyed and will be attempting to destroy the competition. Neandethals fell victim to Cro-Magnon, and the Cro-Magnon [ie. current "humans", we] will in its turn fall victim to the next human species. ( My previous comment http://news.ycombinator.com/item?id=3126716 )
> the Cro-Magnon [ie. current "humans", we] will in its turn fall victim to the next human species.
I don't think so, at least not in a violent way. Like something Nietzsche said in TSZ, "man is something to be surpassed, but only a buffoon thinks that man can be overleapt."
Well, it is really hard to imagine how something/somebody can surpass Cro-Magnon in the ways of violence. On the other side, only violence can keep the Cro-Magnon at bay as Cro-Magnon willn't allow to be peacefully surpassed.
>"but only a buffoon thinks that man can be overleapt"
yep, the 20th century history is littered with such failed over-leap attempts. Curious time we live at - the previous attepts of "leap"-type [necessarily forced] transformations of humans and society are finished and no new is initiated yet. Is it quiet before the storm? I don't believe that we learned the lesson.
True and false. The most "advanced" humans of any given time have destroyed and will be attempting to destroy the competition. Neandethals fell victim to Cro-Magnon, and the Cro-Magnon [ie. current "humans", we] will in its turn fall victim to the next human species. ( My previous comment http://news.ycombinator.com/item?id=3126716 )