Scientists have found evidence of human ancestors traipsing around South East Asia far earlier than previously thought. In fact, the tool evidence, which has been dated to 1.8 million years ago, pre-dates all other evidence of hominids in that region. It's so old it can't possibly be evidence of Homo sapiens, since we didn't show up most of the rest of history (200,000 years ago). What sort of hominid did create the tools is, of course, a matter for speculation.