because physical embeddings of mathematical concepts are quite enjoyable to nerds and others. You probably wouldn't also see anything interesting here (Henry S

because physical embeddings of mathematical concepts are quite enjoyable to nerds and others. You probably wouldn't also see anything interesting here (Henry Segerman http://www.3dprintmath.com/ http://www.3dprintmath.com/ or even https://www.mojoptix.com/2015/10/25/mojoptix-001-digital-sundial/ https://www.mojoptix.com/2015/10/25/mojoptix-001-digital-sun... Personally, I can't visualize things in my head easily but having a physical object I can hold/rotate/inspect helps a ton