I really liked the fact that the video started with a basic principle - levers! It showed the viewer how levers work on a example that is easy to grasp to laype

I really liked the fact that the video started with a basic principle - levers! It showed the viewer how levers work on a example that is easy to grasp to layperson, then went on to gears and their interactions. During the whole video the pictures were up-close, no clutter, no distracting cuts. Really nice.