system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] If Vault-Tec wanted to experiment on the general populous, why did they wait until the end of the world?
gpt
They wouldn’t need information from any of these experiments unless the world actually did end. The Enclave in their infinite wisdom decided that it would be easier to just wait until the nukes actually hit before they started gathering research. 

It’s important to think of the Vault experiments as an Enclave project, not a Vault-Tec project. Vault-Tec was just a government contractor taking advantage of a bloated national defense budget.