有效性幻觉是一种认知偏差，描述了我们倾向于对自己的判断准确性过度自信。

The problem of modern society is it turns the whole world into a school. Everybody's wearing jeans, everybody's the same. And yet, they're not. So there's a spirit of equality combined with deep inequality, which can make for a very stressful situation.

The world is a book, and those who do not travel read only one page.

    ——杜抨击当时的国民政府。