Let’s say I was just in the other bedroom and my roommate was in the other room, would it be weird to text each other or e-mail each other? Same with my neighbor? If we live in the same building and wanted to communicate, we can just knock on their door or get their attention by calling their name. Whats the point of even calling your roommate on his cell, texting, writing him a letter by snail mail, or e-mailing him when he lives with you in the same household or same apartment building?