[@Thang]
Just a few questions about the Vault, now you say that it wasn't an experiment Vault, which means it's a control Vault, designed to open after a certain period of time. Would that mean that our Vault is in fact open? Could we have people whose job it is to explore and trade with the outside world? Maybe the Vault door is only opened to allow them to come and go? Maybe these Surface explorers aren't very well thought of by the rest of the Vault for being "tainted" by the filth and barbarism of the surface?