In my experience, fractal nesting as a spatial navigation metaphor (folders) fails because fracticality thwarts orientation. Hard to hold a mental map of more than one level of depth. Works great as a contextual navigation metaphor though (links).
— Gordon Brander - https://twitter.com/gordonbrander/status/1320100221976678400
I still think zooming metaphors can sometimes thread the needle because they don’t hide away zoom levels, so you can maintain orientation through overview effect.
— Gordon Brander - https://twitter.com/gordonbrander/status/1320101531341836288
Spatial orientation and mental mappability are fuzzy subconscious sort of processes, but taking The Image of the City as a starting point, I would look to create affordances like paths, edges, districts, nodes, landmarks... especially landmarks
— Gordon Brander - https://twitter.com/gordonbrander/status/1320385864153755648