"In his enthusiasm... Tipler has neglected part of the Popperian lesson about what the growth of knowledge must look like. If the omega point exists, and if... created in the way... Tipler... set out... the late universe will... consist of embodied thoughts of inconceivable wisdom, creativity and sheer numbers. But... problem solving means rival s, errors, criticism, refutation and backtracking. Admittedly, in the limit (which no one experiences), at the instant the universe ends, everything that is comprehensible may have been understood. But at every finite point our descendants' knowledge will be riddled with errors. Their knowledge will be greater, deeper and broader than we can imagine, but they will make mistakes on a correspondingly titanic scale too. Like us, they will never know certainty or physical security, for their survival, like ours, will depend on... creating a continuous stream of new knowledge. If they... fail, even once... to increase... computing speed and memory capacity... the sky will fall in on them and they will die. Their culture... will be split by passionate controversies. ...[I]t seems unlikely that it could... be regarded as a 'person'. Rather... a vast number of people interacting... disagreeing. ...often ...mistaken, and many mistakes ...uncorrected for... long periods (subjectively). Nor... ever... morally homogeneous...Nothing will be sacred... and... people will continually be questioning assumptions that other[s]... consider... fundamental moral truths. ...[B]y the methods of reason, every... controversy will be resolved. But... replaced by... more... fundamental controversies. Such... is very different from... God... But... some subculture within it... will be resurrecting us if Tipler is right."