And a large part of social psychology

社会心理学中也有很大一部分内容
concerns the way in which we present ourselves

在关注我们向他人展现自己的方式
to other people so as to make the maximally positive impression

人们会尽力使积极印象最大化
even when that impression isn't true.

即使留下的印象是虚假的
At the same time,though,

但同时
we've also evolved very good lie detection mechanisms.

我们也进化出了很好的欺骗检测机制
So not only is there evolutionary pressure for me

因此不仅存在着要求我对你说谎
to lie to you,

的进化压力
for me to persuade you for instance, that if we're going to have a conflict-

比如如果我们之间存有冲突
if you are threatening me

当你威胁我时
"Don't threaten me, I am not the sort of man you could screw around with"

我会说"别吓唬我我可不是吃素"
But there's evolutionary pressure for you to look

而且还存在着要求你辨别谎言的进化压力