关键是问题怎么问， 最恶劣的例子是所谓75%的科学家要离开美国

你看这个Nature调查的问题“"Are you a US researcher who is considering leaving the country following the disruptions to science prompted by the Trump administration?". 会是什么答案？

那后半句“following the disruptions to science prompted by the Trump administration” 是关键猫腻。

民意测验经常是intellectual dishonesty。