20th century philosopher Karl Popper tried to solve the demarcation problem with a simple rule.

20 世纪的哲学家卡尔·波普尔试图以一个简单的原则解决划界问题。

This mistake was criticized by Karl Popper in his influential book The Open Society and Its Enemies.

然而这一错误却遭到了卡尔·波普尔的批判，他在他的书籍“开放社会及其敌人”有所提到。

The issue of vagueness is summarized in a more technical way by the philosopher Karl Popper who described--who introduced the term of falsifiability.

哲学家卡尔波普尔以更专业的方式总结了模糊性问题，他描述了——他引入了可证伪性这个术语。