One of the first things anyone notices upon arrival in Rwanda is that there are people everywhere in this speck of a country with the highest population density on the continent. Imagine your pedestrian-city street plopped down in the countryside. On foot, on bicycle, carrying baskets on their heads, holding hands, pushing a toy wheel with a stick: every road (no matter the speed limit or distance from a village center) is lined with Rwandese. It's much more fun to be a pedestrian along side them than to be up on four wheels, particularly so because the little people are always happy to see you. Muzungu, they yell, muuuuzungu! It means white person, and while adults often greet your wave with a stare, the children always wave back.