If we turn the question around and now say not, what does the laughter sound like in terms of being real or posed, but we say, how much does this laughter make you want to laugh, how contagious is this laughter to you, we see a different profile.
如果我们把问题反过来， 不再关心笑声听起来 像真笑还是假笑，而是去问 听到这些「笑」， 你被多大程度地感染， 多想跟着一起笑， 我们就会发现另一番结果。