He is saying his "luck" skill is maxed out, so he is +10 while others could be having a real -10 of it.
I'd write the story but evidently we are already background in it.
> For years, he was an abalone diver on the West Coast in
> an area with great white sharks that have a history of
> attacking divers; he lost some friends to the predators.I guess that's life in a quasi-infinite expanse.
And the actor can only be one person :)