Dan Reynolds gives us this rather elaborate Atlas joke. It's actually a combination of an Atlas joke, a scale joke, and a GPS joke. This post here, another "scale" gag, is actually the most visited post on my blog, consistently logging more hits every week. And while its concept is almost identical to what's going on in this post, I somehow doubt this post will get the same number of hits.
If ya take a look at where this Roman charioteer is pointing on his Atlas, that's in the middle of deepest Africa. No wonder these guys are hopelessly lost. That wasn't even part of the "known world" back then... or at least not part of the world known to the Romans.