The Roko thread also contains some choice examples of Bayesians trying to think about far-out probabilities despite the obvious problems involved: someone (somehow!) estimates a relevant probability as “10^(-9) or less” and Roko replies:
Why so small? Also, even if it is that small, the astronomically large gain factor for each % decrease in existential risk can beat 10^(-9). 10^50 lives are at stake.
