请教最后一句话的理解
What we boast of as modern or up-to-date today， will be old-fashioned or out of date tomorrow. The noisy insistence that something is modern often conceals fear of the knowledge that it will inevitably soon be superseded， again， the very fact that modernization has one attitude， acceptance or rejection. The desire to change or modify the world we live in implies acceptance， since the world is a world of change. Rejection of modernization may therefore， lead to a sense of the world as unreal and meaningless， and this， in turn to a breakdown， either individual or social.


就是“Rejection of modernization may therefore， lead to a sense of the world as unreal and meaningless， and this，
in turn to a breakdown， either individual or social.”特别是后半句 谢谢～～～

请教最后一句话的理解

后半部分就是围绕  modernization has one attitude， acceptance or rejection. 展开的。
The desire to change or modify the world we live in implies acceptance， since the world is a world of change.说的是acceptance；
Rejection of modernization may therefore， lead to a sense of the world as unreal and meaningless， and this， in turn to a breakdown， either individual or social.说的是rejection.

下面说这句话：Rejection of modernization may therefore， lead to a sense of the worldas unreal and meaningless， and this， in turn to a breakdown， eitherindividual or social.

Rejection of modernization may lead to a sense of the worldas unreal and meaningless.
主干Rejection may lead to a sense.
Rejection of modernization拒绝现代化
a sense of the world 对世界的判断
a sense of the worldas unreal and meaningless 对世界是不现实的，无意义的判断。

this， in turn to a breakdown， either individual or social.
主干：this leans to a breakdown.
理解这句话的关键在于明白this 的指代，指代前面的 a sense of the worldas unreal and meaningless.
承前省略了谓语动词 lead
individual breakdown or social breakdown

谢谢 完全明白鸟