Save Our Spirals

One can come across heritage references in surprising places—and be given cause to look at Discworld covers in a new light.

‘I feel the Danube spiral links all Western art... It is an important heritage and I think it is part of the job of the artist to link with what has gone before and carry what is good in our civilization forward for future generations.’
Josh Kirby, quoted in David Langford's A Cosmic Cornucopia

The 'Danube spiral' being that formed with the Golden Ratio. I can see the link to other work on the preservation and continuation of practices, crafts and art styles, etc. but I can't bring to mind another case of a not immediately obvious mathematical element of style being cited as heritage worthy of preservation.