[tinkthank]

I did a search on +norna, but surprisingly turned up nothing, so here goes:

How exactly do they work? Does each Norn have a small chance of averting a bad luck event in that prov IF a bad luck event would have happened -- does it just become a non-event, or a good event? What if 5 Norn are in the same province -- are the chances 5x better that no bad luck event will occur? If so, is it cumulative or random -- e.g. If 20 are in the same prov, will there be ZERO chances of a bad luck event, or just a very slim chance?