But I want to start in every example, in every situation that I explain to you, with the simplest example, and slowly add on things.

所以我会都从最简单的例子讲起,在我给你们解释的每一个例子里,都会用最简单的例子,然后慢慢增加难度

耶鲁公开课 - 基础物理课程节选