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These two possibilities suggest an eventual bifurcation of the population upon lines of inherent geocentrism, with this cognitive expression of individual variability becoming a source of social tension and eventually a selection pressure on the population.Both experiences—those of Mars and those of artificial habitats—will be strongly selective, and they will select different traits, both of body and mind.We are not a hair better than our great, greenskinned, gatortailed Merseian rivals, not even considering that they have no hair; we are simply different in looks and language, similar in imperial appetites. Never mind the estimated four million suns inside our borders . I myself had never heard of the place before I was asked to take this job.
They were not trying to figure out which stars could host a human habitable planet.While living on Mars will not be easy, it will be far more planet-like than living in an entirely artificial habitat.We are the kind of beings that evolve on a planetary surface, i.e., our bodies and our minds both were shaped by our planetary endemism, and this homeworld effect is expressed in our characteristic modes of life and thought.The adaptive radiation of humanity in the cosmos will begin with these early spacefaring settlement efforts, but biological and cognitive adaptation to changed circumstances will still be in the far future when the first settlers are making themselves at home on Mars, and the first artificial habitats are being built and occupied.During the earliest stages in the development of spacefaring civilization, the adaptation will primarily be that of individual attitudes.
In his Flandry of Terra novels, Poul Anderson specified that the Terran Empire was four hundred light years in diameter. A sphere 400 light years in diameter has a 200 light year radius. Anderson cites a figure of about four million stars, which means one of us is a bit off the mark Why, I shall tell you what we are and these are, John Ridenour.