Aurora_Fatalis
Can you shed some insight on the more esoteric design decisions, such as the map of Roshar being based on a fractal, in particular a slice of the Julia set of some seemingly-random 4-dimensional function? How do things like this come to pass? Are designs like this mandates from Brandon? Do you ask mathematicians for something obscure to hide in the map? Is fractal theory the hobby of someone on the team?
Isaac Stewart
This is what Brandon has said concerning Roshar and the Julia Set. He handed the picture to me and said, "Can you turn this into a giant continent?" and I said, "Yes." The process of defining the coastlines, mountains, and islands was quite fun after that.
Araedox
How did the Roshar map being a Julia Set affect the process of creating it?
Isaac Stewart
It really was no different than other maps I've made. I usually am seeing maps everywhere I go: guacamole remnants on lids, stains on restroom floors (ew!!), and random stains in the road or the way a brick wall crumbles. I like these fractal-like images and save pictures for future maps. So I just took the Julia Set and looked at it and said, "okay, now it's a real continent, where are the rivers, how does the coastline go, where are the islands, etc."