On Practical Ethics I blog about Petrov Day: the anniversary of an avoided nuclear cataclysm.

The lovely thing about this incident is that there is a person to focus on, making existential risk dramatically real. The LessWrong community has developed a ritual to commemorate the event and make our individual responsibility for reducing existential risk more vivid.

Averted disasters are hard to see, so we need more and bigger monuments to people who averted things.