Footprints' arguement for technology does not hold up. Sure, a chimpanzee uses sticks to catch ants. It's also theorized that many early hominids used this method. The difference between the Homo Habilis and the Australopithecus is that the Homo Habilis began creating his or her own tools. They were crude though, usually unifacial stones. Then the Homo Erectus came along, and they broadened the gap technologically. Instead of taking large flakes of stone off at once, they would take off smaller flakes. This is also part of another characterization of hominids where one organizes patterns into ideas. This is much more advanced than breaking off a stick from a tree and using it to catch ants. It's not the use of tools that matters, as many other species in the world use tools, but the actual creation of tools that seperates us from the less advanced species. Spider webs are irrelevant, as they are not technology, but merely a natural process the spider undergoes. I also hardly see nests being a good comparison to something like the Taj Mahal.