The creation of obsidian scales was a very hard job for the Homo erectus. A twelve-year old boy would be trying hard to make one but he would be unsuccessful. When after a long time, he managed to split one such rough scale off, he picked it up and with shiny eyes showed it to a woman who must have been his mother, who rewarded him with a smile and a sweet caress. He then ran to show it to the other children who rather indifferently looked at his creation. That was a reaction he didn’t like and so, he soon forgot all about obsidian scales and went back to the game with the rest of the children. That tool-making technology by the Homo erectus is today known as the achelo civilization and reached all the way to Homo sapiens. By making use of such technology, Homo erectus had managed to creat
