I really liked the example of the concept of friend in the chapter 4 and how people can refer to everyone as a friend without actually objectively defining what it is. I am really interested how Rand would actually define this. If you know that she has writing in this topic, I would appreciate the help to find it. If no, I would like to hear opinions about this, cause I am almost certain that she would have integrated the concept of selfishness and gaining something in return into this. What do you think?