I remember watching the previous video and feeling like I couldn't completely understand his explanation. In this video I think I get it. The lever analogy and

I remember watching the previous video and feeling like I couldn't completely understand his explanation. In this video I think I get it. The lever analogy and the part with the wooden board and wheels was a nice touch. I know many here look down upon YouTube for science videos but hey someone has to do the stupid job of trying to make it simple for the masses and some channels like this are really good at doing that.