We don't have the best senses of vision or hearing.

VOA: standard.2010.02.11

So I think it's pretty clear when Socrates starts talking about what's visible versus what's invisible, he doesn't limit himself to vision, he means to be talking about all of the 5 senses.

所以我认为很清楚的是，苏格拉底,在谈论何为有形,何为无形的时候，并没有局限在看这一种感官上,他要谈的是所有的五种感官。

耶鲁公开课 - 死亡课程节选

But we don't have X-ray vision.

但我们没有X光。

耶鲁公开课 - 死亡课程节选

I was just finding very tunnel vision-like, the smallest elements at that moment in time which means I don't know anything about the other elements other than they are not the smallest and so no matter what with Selection Sort I had to repeat this again and again and again and if you do out the math it's roughly N squared steps in the worst case as well.

我只有一个狭窄的视野，只知道某时刻的最小元素,就意味着我并不知道其他元素的任何情况,只知道它们不是最小的,所以不管怎样，在选择排序中,我就得一遍一遍地重复选择过程,在最坏情况下,大概需要N的平方次比较。

哈佛公开课 - 计算机科学课程节选