the Vault experiments make perfect since, as they theoretically provide the prefect experimental conditions for any social experiment being able to play with the independent variables in almost perfectly controlled enviroment. Heck you could even tie the tactics storyline here Vault 0 being the control center, but in the same time they being also part of the experiment. And for the motif for somebody doing such a thing well we don't have to go that far history being full of people who tried to make it happen ,trying to make utopian societies. The war could have presented the perfect opportunity, and the social experiment of the vaults being the experiment that will provide the know how the missing links which are then added to the existing data provided by social science.
So what if in the process couple of thousands of people died they did it for the greater good of a perverted concept of humanity, There were vaults that actually functioned, which can provide the raw material to repopulate the earth, artificial insemination being able to enormously speed up the process (who knows maybe they had a couple of large sperm banks with pree war material ).
And if we put all this in the context of the 50's i's not that impossible, just remember the prank of 38' by Orson Wells wich caused nationwide panic in the US was still fresh
So what if in the process couple of thousands of people died they did it for the greater good of a perverted concept of humanity, There were vaults that actually functioned, which can provide the raw material to repopulate the earth, artificial insemination being able to enormously speed up the process (who knows maybe they had a couple of large sperm banks with pree war material ).
And if we put all this in the context of the 50's i's not that impossible, just remember the prank of 38' by Orson Wells wich caused nationwide panic in the US was still fresh