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how do your own experiences and biases affect your ranking?
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thats exactly the POINT..this whole thing is more an *interesting* game in psychology. And/Or reflection of the society and how assumptions, prejudgement and BIAS affect a (preferrably *neutral*) judgement.
I mean, i can *at least* expect from a somewhat sane person that NO ACTION (NOT involving a crime like murder etc.) whatsoever *legitmates* the punishment w/ death. If this were the case (and sadly it looks like SOME people on ATOT very well tend towards this)...we would have the same societu like in, say, Iran, where women get stoned to death for adultery.
In what relationship is the punishment w/ death to the "crime". Or statements like "she deserved it"...etc..etc..
If you can't go down from your BIAS than you have no place/competence to even remotely judge in a crime, this BIAS can involve other races, genders, political view,own preferences of "what YOU think is moral" or whatever. Again, if this were the case the world would be an anarachy (dictatorship ?).
The "art" there would be seeing it as neutral as possible and at least TRYING to *not* let my BIAS influence a decision "who is guilty".
The husband can not be less guilty because he was CHEATED on. If so..again ---> anarchy

The wife is not MORE guilty because she took a risk.
The wife did NOT more "deserve" death because she commited adultery.
Whether the wife is a "whore", prostitute, sex-obsessed nymphomanian, republican, democrat, white, black, stupid, Someone killed her.
I can't weigh the act of the killing more or less according what background the victim is from or based on the victim's view on life

(EXCEPTION tho if the killing happened in self-defense, but that doesnt apply here)
Not that i am a lawyer or anything...but shouldn't it be clear that the only one responsible is of course the killer (assuming he was not hired) and that fpor the other persons, I GUESS those have the higher responsibility who KNEW that the assassin was on the bridge
From that point of view..the husband did NOT know about the killer, i assuming the boatsman didnt either (this is not clear)...actually the lover KNEW.
so..recap..
1) Assassin
2) Lover (he knew about the killer on the bridge)
For the other we need more data...eg. whether boatsman actively refused to "save" her, but i think he didnt know about the assasin.
Husband didnt have any intention to KILL (assuming assasin was not hired by him)..so i'd place him at bottom
w/ the wife it's not clear why she didnt stay at the lover's and instead took the known risk going back to the house...but i dont want to place her into a "responsibility" because she took a risk...rather "stupidity"...but then (again, not enough data) maybe she HAD to go there and there was no way around ?