Will the best regime be a small closed society ? that through generations has made a supreme sacrifice towards self-perfection? Think of that.

最优的政体会是一个小型封闭的社会吗,经过多代之后，已壮烈地牺牲于自我完善之中,想想这个问题。

耶鲁公开课 - 政治哲学导论课程节选

So, let's say we start off at the distance being ten angstroms. We can plug that into this differential equation that we'll have and solve it and what we find out is that r actually goes to zero at a time that's equal to 10 to the negative 10 seconds.

也就大约是这么多,所以我们取初始值10埃,我们把它代入到,这个微分方程解它,可以发现，r在10的,负10次方秒内就衰减到零了。

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