Veresae. If we remain on this planet, it is quite probable that we will doom ourselves to extinction. An increase in population naturally results in an increase in information transmission, retrieval, and processing. By extending our lifespans we will see an exponential increase in lifespan, and technology as well. Also, one of the reasons this planet is "screwed up" is because many of us are not able to develop an intelligence with the capacity to adequately reflect on issues, including myself. Personally, if I could live to be 1000 yrs old, I would become a master of physics, philosophy, biology, chemistry, psychology, and whatever other subject matter that results as a union of these studies. It is very probable that after living this length of time one could extend their mortality beyond 1000 yrs, build a transdimensional device, and explore the universe.
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Any thing that can happen, will happen, has already happened, and is happening right now.