Manual for Civilization

We have confidence in our science-based civilization and think it has tenure. In so doing, I think we fail to distinguish between the life-span of civilizations and that of our species. In fact, civilizations are ephemeral compared with species. Humans have lasted at least a million years, but there have been 30 civilizations in the past 5000 years. Humans are tough and will survive; civilizations are fragile. It seems clear to me that we are not evolving in intelligence, not becoming true Homo sapiens. Indeed there is little evidence that our individual intelligence has improved through the 5000 years of recorded history.

Original Link: http://blog.longnow.org/2010/04/06/manual-for-civilization/