It's all well and good to be optimistic, I'm a MacGyver too, but when society only gets one roll of the dice to restart after a mass extinction event I don't th

It's all well and good to be optimistic, I'm a MacGyver too, but when society only gets one roll of the dice to restart after a mass extinction event I don't think it's advisable to discount the difficulties and challenges society will face trying to restart, with access to accessible energy sources being a major component of those challenges.