In Japan, removing shoes at the genkan is the foundational threshold of human civilization.
I watched my American roommate enter the house, walk across the carpet, and lie flat on his bed with his size-sleven New Balance sneakers propped directly upon the white quilt.
I stopped breathing.
He was not unhygienic. He was in a continuous, uninterrupted state of combat mobilization. If the mongols charged through the front lawn right now, he would not lose eight seconds tying laces.
He sleeps in his boots. The frontier spirit never rests.