  Bergmann (2012) offers an error theory to explain away the overwhelming impression of unjustifiability: that we can't grasp evils much worse than ones which give rise to this impression.  But this seems irrelevant, for the spectrum of truly horrendous evils is broad enough that the impression of unjustifiability can be generated from the lower end of the spectrum, leaving instances at the higher end as proof that we can conceive of worse evils than those minimally sufficient for generating the common sense problem of evil.