0 is a perfectly valid probability estimate. Obviously the chance that an event observed to have not in fact happens is..ok fair. Maybe not zero. You could be mistaken about ground truth reality having happened.
So for instance if AIs take over and wipe everyone’s memories and put them in a simulation, the observed probability in 2100 is that AI didn’t do anything.
0 is a perfectly valid probability estimate. Obviously the chance that an event observed to have not in fact happens is..ok fair. Maybe not zero. You could be mistaken about ground truth reality having happened.
So for instance if AIs take over and wipe everyone’s memories and put them in a simulation, the observed probability in 2100 is that AI didn’t do anything.