http://anthropik.com/thirty/Lot of interesting things about civilisation and the collapse of it, etc.
I especially liked this quote:
Relatedly, there is a great deal of evidence not only for physical and emotional vigor among primitives but also concerning their heightened sensory abilities. Darwin described people at the southernmost tip of South America who went about almost naked in frigid conditions, while Peasley observed Aborigines who were renowned for their ability to live through bitterly cold desert nights “without any form of clothing.” Levi-Strauss was astounded to learn of a particular [South American] tribe which was able to “see the planet Venus in full daylight,” a feat comparable to that of the North African Dogon who consider Sirius B the most important star; somehow aware, without instruments, of a star that can only be found with the most powerful of telescopes. In this vein, Boyden recounted the Bushman ability to see four of the moons of Jupiter with the naked eye.
“In the kingdom of the blind, the one-eyed man is king,” the proverb says. If these all seem like miraculous super-powers, they should not. We often marvel that all animals are faster and stronger than we; have we truly been so neglected by evolution? Is it not more reasonable to conclude that our faculties are equal to those of any other animal–if only we were to use them in such a manner as evolution has fitted them for us? The “amazing” abilities of foragers should not amaze us; rather, we should marvel at how much we have lost to live such a maladaptive life, and in trade for so little.
The examples of their eyesight are exaggerated of course, but you get the point.