Humans banded together instead of working more as individuals and started hunting animals in groups, groups of animals hunted by groups of humans.

人类开始聚集在一起,而非单独行动,人类开始集体狩猎,集体狩猎帮助人类捕获大量的动物

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Then we got into more deliberate hunting of animals, larger species were hunted and then you started to see humans eating things like mammoth, deer, horse, bison, and reindeer.

我们开始有意识地狩猎捕食,我们开始捕杀巨大的物种,于是你能发现人类食用大型动物,比如猛犸象,鹿,马,野牛及驯鹿

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选