So much of what we've been talking about here, you know, comes down to the problem of egocentrism.

我们在这里讨论很多内容，你知道，归根结底自我中题。

It is in this sense that cooperation and egocentrism are complementary notions, both of which should be born in mind when we discuss conversation.

换言之，自我中论，从自己角度、根据自己知识、按照自己语境看题倾向，一种无意识、直觉反应，因而不可避免。这样界定话，自我中论对交际一个方面客观描述，有何只为自己谋利负面涵义。或者，我们也可以这样说，会话参与者虽然都愿意为交流信息而合作，却可能对特定语境下“合作”有不同判断。在这个意义上，合作和自我中论互补，讨论会话时两者都要考虑。

The knowledge that one's sufferings are shared adds an important perspective to the egocentrism of youth.

了解到自己痛苦被他人分担，为年轻人自我中视角增添了重要维度。