id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-4438 Anthropic principle - Wikipedia .html text/html 9661 982 64 Weak anthropic principle (WAP) (Barrow and Tipler): "The observed values of all physical and cosmological quantities are not equally probable but they take on values restricted by the requirement that there exist sites where carbon-based life can evolve and by the requirements that the universe be old enough for it to have already done so."[24] Since that time a number of mechanisms for producing a multiverse have been suggested: see the review by Max Tegmark.[34] An important development in the 1980s was the combination of inflation theory with the hypothesis that some parameters are determined by symmetry breaking in the early universe, which allows parameters previously thought of as "fundamental constants" to vary over very large distances, thus eroding the distinction between Carter's weak and strong principles. ./cache/en-wikipedia-org-4438.html ./txt/en-wikipedia-org-4438.txt