复数： irrationalities

But our irrationality isn 't all bad .

可是这种不合理也并非完全是错的。

You are also responding to concrete manifestations of human irrationality on a global scale .

全世界范围里，人们各种不合理的状况，你也是有感触的。

Among all these things , it was also a result of a collective will to irrationality .

除了这些因素外，这也是普遍想获取不合理（利益）的结果。

Irrationality can be explained rather simply : we 're only human .

要理解非理性相当简单：因为我们是人。

I find this kind of irrationality to be a disease .

我觉得这是一种非理性的疾病。