The child's doodle is something one ca see and understand. You can even try to psychoanalize it or whatever.

What I'm afraid is that there are some really powerful and valuable ideas in Urbit but they will evaporate away from humanity's gasp because there's no way to practically connect them to anything.

Also a child's doodle is something you can ignore or throw away and nothing will be lost... while this has some value in it...

(Edited because I saw they actually have an understandable mathematical formalism for all of it. Sorry for guessing otherwise.)