If prophets of 1900 AD - never mind 1000 AD - had tried to bound the powers of human civilization a billion years later, some of those impossibilities would have been accomplished before the century was out.

By Michael Anissimov.

Existential risks are risks that threaten humanity's existence.

A Singularitarian blog with particular focus on issues of AI morality and existential risks.

The probability of existential risks may be very low, but the expected value of preventing them could be high, as it represents the value of all future lives. This paper reviews the challenges to studying human extinction risks.