This quick TED talk entry is courtesy of TED.com. Map designer Aris Venetikidis is fascinated by the maps we draw in our minds as we move around a city — less like street maps, more like schematics or wiring diagrams, abstract images of relationships between places. How can we learn from these mental maps to make better real ones? As a test case, he remakes the notorious Dublin bus map. (Filmed at TEDxDublin)