These crude tools were around for thousands of centuries, until around 1.4 million years ago when Homo erectus started shaping single, thin stone blades, sometimes rounded ovals, but often in what are to our eyes an arresting, symmetrical pointed leaf or teardrop form.
Ti grubi alati su okolo tisućama stoljeća do otprilike 1,4 milijun godina unazad kada je Homo erectus počeo oblikovati pojedinačne. tanke kamene noževe, ponekad okruglo ovalne, ali često u, ono što je našim očima, privlačnoj, simetričnoj formi koja podsječa na list ili suzu.