This video explains my idea for why Vaults really existed...Vault-Tec wasn't trying to save the inhabitants of the Vaults, but instead they were testing technologies they would need to make a multi-generational starship they could use to flee from a ravaged post-nuclear Earth.
EDIT: I’m sorry about the bad video and sound quality. That’s been fixed in future videos.
![](https://i.ytimg.com/vi/oWd4RBdeoaM/maxresdefault.jpg)