他认为共享意向在人类世系中很早就得到发展了，而且它的目的很可能是在采集食物过程中相互合作。

Shared intentionality evolved very early in the human lineage, he believes, and its probable purpose was for cooperation in gathering food.

youdao

你会看到共蚁，他们为自己和所有其他的蚂蚁采集食物。

You will see the worker ants, who gather food for themselves and for all the others.

youdao

他们用结实的网采集食物样本并圈住部分正在进食的鲸鲨，进行他们的研究。

As part of the study, the scientists used fine nets to collect food samples inside and around the school of feeding whale sharks.

youdao

If you think about what ancient food gathering habits used to be like, you see things like this where people are out gathering food that is growing naturally, and you can think about what would-- what sort of conditions this would create and what kind of hardships it would create.

如果你想知道古代食物采集的习惯,请看这张图,人类都在野外采集自然生长的食物,你可以设想到,条件有多恶劣,生存有多艰难

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选