Anyways I ended up writing a story in this hypothetical world where one day the doorbell rings and we find that the older version of the family's son has come to visit the family. Initially there is super excitement- there are gifts and souvenirs and the older version is welcomes and he decides to stay on for a few days. However, gradually the family and even the son starts getting annoyed by the presence of this old intruder and start missing his privacy. The whole family keeps waiting and wondering when this old man will leave but feels it won't be right to enquire from him. They try to check his return tickets and worry when they don't find any.