3 ms·
This is still an open question after multiple millennia. Some posit that it is innate and have primate studies to back it up. Others posit that it is a cultural
by callalex 10y ago
This is still an open question after multiple millennia. Some posit that it is innate and have primate studies to back it up. Others posit that it is a culturally learned phenomenon and have social studies to back it up.