I can hear the people who live above me. They rise and shower early, usually before I get out of bed. They don't listen to loud music, engage in extraordinary screaming matches, or wear roller skates in their house. One of them often works late and lets the door slam upon returning home. They either arrange their furniture every Thursday night, or maybe they push it all to the sides of the room so they can dance in their socks. I know several of their personal habits, but I've never met them. I prefer it this way. It means I never have to risk them asking me to help them move furniture or dance in my socks.