It was once known that longbowmen could shoot arrows curving around an obstacle. Scantly recorded, then the actual skill was forgotten until an archer geek who

It was once known that longbowmen could shoot arrows curving around an obstacle. Scantly recorded, then the actual skill was forgotten until an archer geek who knew about the obscure written references worked out how to do it again from scratch. I'm not sure if it's a good example of technical knowledge being lost, but I think this video from Lars Andersen a couple weeks ago is the one being referenced: https://www.youtube.com/watch?v=qc_z4a00cCQ https://www.youtube.com/watch?v=qc_z4a00cCQ Or maybe this one from a couple years ago? https://www.youtube.com/watch?v=4lNUXoOoCU0 https://www.youtube.com/watch?v=4lNUXoOoCU0