Today in 2019, “the world” is defined as “you know, the world“, and there are seven million buttons being held down all over the world.
If any four of them are released, the world ends.
We have made mistakes, is what I’m saying.
(I once had call to explain to nontechnical people how and why the internet is the way it is and why my ops crews tend to be full of people who are a little too calm about things being constantly on fire. This was my best crack at it.)