I'm sure most of you here know that many ancient artifacts have been unearthed around the world that do not fit into the accepted theories of human history. Take a look at two such artifacts found in Southeastern Arizona in the past decade at the link below. They appear to be Oldowan Tools, ancient stone tools used by such proto-human species as Homo habilis and Homo erectus. Yet, history says these species were never in North America. So how do these artifacts get into a dry river bed in Arizona, USA??? I will be interested in reading your observations, theories, and opinions.