Looks like Prof. Guidon doesn't play around:'At her home on the grounds of a museum she founded to focus on the discoveries in Serra da Capivara, she said she believed that humans had reached these plateaus even earlier, around 100,000 years ago, and might have come not overland from Asia but by boat from Africa.'
I can understand Africans desire to leave, however, they have never envisioned anything like travel on the oceans or shoe laces. Lets try a peoples like the Phoenicians or Mesopotamians. Africans missed the bronze age, iron age and industrial revolution for a reason!