This post has a link to a YT video showing this. This image is a still frame from a video camera.

I think they are saying the post above yours stunned them.

I think you’ll be fine if you’re interested in it. It helps to reinforce if you use the knowledge practically but I went through a phase where I learned a bunch of knots for climbing. Turns out you mostly use the same one or two knots for most things and most of what I learned wasn’t super practical. I still enjoyed it and occasionally find uses for some of the other knots outside of climbing. Most I still remember despite not using often though I admit I can’t quite recall how to tie a Monkey’s Fist properly….