Both created by humans?

I dunno, but is a good question 🤔

Also mycelium.. take a look at this page:

brandonquittem.com/bitcoin-is-the-mycelium-of-money/

There are some things and mechanism in nature that are replicated in many fields, citys seems to be optimized for making good use of space and also being well interconected, I think the same external boundaries apply to computer chips.

For example all things that relates to flow from a volume to a point will probably show a dendritic structure like trees, lungs, etc..., see "The constructal law"