"In observational studies, we often have to rely on assumptions that are not directly testable."
目的可以证明手段的正当性,只要存在某种能证明目的正当性的东西。
点击化学不仅是一种方法,更是一种追求合成简单和可靠的哲学。
To truly understand a problem, you must first simplify it to its core essence.