Some people might say that ignorance is bliss and I agree with them.

有人也许会说无知者是最快乐的，我非常同意。

youdao

As one of the characters in the film says, "ignorance is bliss" Essentially, if the truth is unknown, or you believe that you know the truth, what is there to question or worry about?

正如影片中的一位人物所说，“无知就是幸福。”重要的是，如果真相是未知的，或者你深信你了解真相，还有什么要询问或担心的呢？

youdao

Turns out, the idea that ignorance is bliss borrows from the idea that happy people might just be uninterested in looking into the ugly truth of things that occasionally lies under the surface.

FORBES: Are Happy People Just Plain Dumb?

In an era of renewed FCPA enforcement, that kind of ignorance is no longer bliss.

FORBES: For U.S. Businesses, Russia Means Immense Opportunity -- and Immense Exposure