Thanks for posting the xkcd comic. I was intrigued by the phrase "distributed graph theory tree model." It is definitely missing some hyphens. Ultimately I deci

Thanks for posting the xkcd comic. I was intrigued by the phrase "distributed graph theory tree model." It is definitely missing some hyphens. Ultimately I decided it should be "distributed graph-theory-tree model." That is, "graph theory" is an adjective modifying tree, and tree is an adjective modifying model.