[Tuchman] starts with a quick proof-of-concept using an actual plastic Spirograph toy to make sure it isn’t a totally unworkable idea. Unsurprisingly, the plastic is too flexible to give a ...

The story of Spirograph goes way back to 1827, when Peter Hubert Desvignes, an architect and engineer created what was known as a “Speiragraph”, a device to create elaborate spiral drawings.