This talks about representing numbers as graphs whilst showing that the graphs can appear to be reminiscent of leaves, not that the numbers are leaf nodes of graphs, which is where I thought it was going at first.
One reason spices were treasured may be because back then, European food was much more bland that it is today. Think of all the foods of American origin which weren't known about (potatoes, sweet potatoes, corn, chili peppers, cocoa etc).
I hope this is an academic exercise because if absolute zero entails no air travel, no shipping, no lamb or beef, amongst other prohibitions, it also entails violence.
But the piano created Mozart. What I'm suggesting is that the limiting factor is the number of pianos and musical cultural environments, rather than the amount of potential musical geniuses.