The way Judson's preoccupation with what he believes is "fair" leads to his downfall is when he inadvertently drinks the poisoned liquor.
This refers to the actions of Judson who is a stingy man and a miser who wants to do what is fair and does not listen to advice.
Hence, we can see that he suspects a thief is taking his liquor and decides to poison it later his servant mistakenly gives him the poisoned liquor and he dies.
One of the themes of the story is ruthlessness as Judson believes in dealing in a tough way with thieves.
Read more about ruthlessness here:
https://brainly.com/question/16778428
#SPJ1