Quote Originally Posted by bovi
You may be seeing results of education.
Code:
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Trigger scholastic_learner
    WhenToTest CharacterTurnEnd

    Condition EndedInSettlement
          and RemainingMPPercentage = 100
          and SettlementBuildingExists >= academy
          and Trait Scholarly = 3
          and Trait Celtic < 1

    Affects MathematicsSkill  1  Chance  5
    Affects NaturalPhilosophySkill  1  Chance  5
    Affects PublicAtheism  1  Chance  5

"5" seems to be to much. I have about 1/3 to 1/2 of all characters that spent some time in Rome ending up with the "Hates the Gods" trait. I don't know how much atheism was spread in the Hellenic world, but the Republican Romans were a quite religious folk, in particular the ruling class in public. The chance should be either "1" or the trigger should ask for a temple of the same size.