We teach it to our children. We hear it on television and in storybooks. Now, the original title of this session was, "Everything You Know Is Wrong," and I'm going to present evidence that this particular part of our common understanding is wrong, that, in fact, our ancestors were far more violent than we are, that violence has been in decline for long stretches of time, and that today we are probably living in the most peaceful time in our species' existence.
我们从电视及书本中了解到这些，并且这样教育孩子 这个讲座最初定的题目是 “你所知道的错误信息”，我现在就要给出证据 推翻大家原先对于暴力的一些认识 实际上，我们的祖先要比我们暴力得多 随着时间的推移，暴力出现的频率一直在走低 我想现在很有可能正处于人类历史上最和平的时期