The jury isn't there to interpret the law - plenty of people in the room doing that already. Juries are there to inject mercy. I don't buy that they will inje

The jury isn't there to interpret the law - plenty of people in the room doing that already. Juries are there to inject mercy. I don't buy that they will inject mercy, especially if they thought about irrelevant factors to determine guilt or innocence. Juries are unpredictable. Does that mean that they made good judgement or that they are swayed by good-sounding arguments?