NASA Wakes Up: Saving Earth From Killer Asteroids Is A Waste
Ethan Siegel

The results of an asteroid strike are readily measured in lives lost, as Ethan does. However, there are more lives lost than listed — we need to count lost children and future generations too. For most cases, these numbers are not terribly significant since the remaining billions of humans rapidly repopulate to whatever population level they desire.

However, for a Humanity-ending event, the loss of all future people pushes the loss of life to infinity. Then it’s obvious that we should devote vast resources to detecting, avoiding, and defeating the threat.

Cost/benefit analysis is the rational approach, but the details are where it gets sticky...

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