the researchers studied stone tools that were used by people in the early ahmarian culture and the protoaurignacian culture , living in south and west europe and west asia around 40,000 years ago .
they found the human tools -lrb- reconstruction right -rrb- may not have been as dim-witted as first believe , claims the study .
the early ahmarian culture used small stone points as tips for hunting weapons like throwing spears .