GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - 7UIVT67B7QS5P6SUK

People widely believed that the controlled use of fire originated 200,000 years ago with the human species Homo sapiens. However, a site containing a deposit, estimated to be nearly 500,000 years old, consisting of charcoal, burned animal bones, and charred rocks, has recently been found. Although Homo sapiens did not exist at that time, this discovery provides no basis to the claim that the controlled use of fire preceded the Homo sapiens, since ________.