B. Grant refused Lee’s sword upon surrender.
The personal judgement based on unfounded evidence is bias
Benedict Arnold went into a meeting to convince the Patriots not to surrender to the British.
Because the Scientific Revolution and the Reformation Era had not happened yet and people blindly followed the church's teachings.
So that the really important cases can be addressed by good judges (at lack for better words) and maybe change a law (Rosa parks case). And lesser ones be taken care of fast.