Agreed, just trying to keep the tutorial simple for now. My other web-animation/education project (https://sparkbox.github.io/bouncy-ball https://sparkbox.githu

Agreed, just trying to keep the tutorial simple for now. My other web-animation/education project (https://sparkbox.github.io/bouncy-ball https://sparkbox.github.io/bouncy-ball) uses requestAnimationFrame more heavily. Now that I think of it, it might be worth adding an asterisk and footnote about requestAnimationFrame to the post.