The value of a video like this centers on craftsmanship. I teach. Showing students dedication to craft is important. I watched this "horn bow in a cave" video few weekends ago. Since then, wrapped up serious projects, motivated by his work. So many of you guys ( chuckl. winning that flight contest, sleek building in a parking lot!!, DC's builds, etc..) motivate unknown numbers to revisit craftsmanship as a virtue.
Hopefully my comment does not kill the thread.
I realize that I digress from horn bows specifically, but I want to point out that this site, and the video, is fantastic in how it pushes craftsmanship.