It's a fair point, but if the thought exercise is that we must do as much as we can to prevent a future catastrophe, I feel like the cost of an antarctic vault

It's a fair point, but if the thought exercise is that we must do as much as we can to prevent a future catastrophe, I feel like the cost of an antarctic vault would be manageable compared to the cost of some military projects, moon missions, or even megaprojects in American cities.