Here in the United States, we drive on the right side of the road. We walk on the right side of the road. If you're on the escalator and you want to just stand while others walk around you, you stand on the right side. Basically, we tend to default to being on the right when in doubt. Many of us know, on an intellectual level, that people in other countries "drive on the wrong side of the road," but it's still just a random fact that we tuck away in the back of our minds. It's when you go to another country and actually experience that difference that things start to get interesting. Like, say, when I went to Japan. Given the title and the lead in to this post, you can probably guess that in Japan people drive on the left side of the road and stand on the left side of the escalator (while everyone passes you on the right). Now, it usually only takes a couple of times of walking "upstream" for you to realize that you're walking on the wrong side, ...