Five Levels of Difficulty

I have found this interesting trend where a concept is explained in five difficulty levels.

In this first YouTube video, Brian Greens explains time to a 9-year-old kid and a professor. Here is the video https://www.youtube.com/watch?v=TAhbFRMURtg

In the next video, Sean Caroll explains dimensions the same way. Here is the link https://www.youtube.com/watch?v=3KC32Vymo0Q

In this video (https://www.youtube.com/watch?v=QcUey-DVYjk) in astrophysicist explains gravity in five levels.

I like these videos and would recommend to watch it.