能够发展出文明的智慧生命与最简单的微生物之间的差别何止千万重！虽然我们对外星文明不抱奢望，但对寻找简单的外星微生物应有信心，因为处于生命初级阶段的微生物对环境的要求远没有高级的智慧生命那样苛刻，这一点我们从地球微生物的考察中就能得出结论。——当然，一个严 The difference between the intelligent life of civilization and the simplest microorganism can be developed! Although we do not expect extraterrestrial civilization, we should have confidence in the search for simple alien microbes, because the requirements of microbes living in the primary stage of life are far less severe than the advanced intelligent life. This is what we have learned from the microbiology of the earth. It can be concluded. - Of course, a strict