Imagine the following scene: alien spaceships in orbit around earth, dropping nuclear bombs into our atmosphere at the rate of 1 bomb per second with the goal of overheating earth and destroying all life on it.It is obvious what we would be doing. We would drop absolutely everything else and mobilize all of our resources to defeat the aliens. There are of course plenty of movie versions of that kind of scenario, such as Independence Day. So why are we complacent instead? Because (a) it’s not ...