Cause he is a wearthless peice of crap who can't do nothin but pick fights with everyone he want to and thats what happened
Curley promises to tell people that he injured his hand in a machine, as a way to hide the fact that he got it crushed in a fight with Lennie. This is to save face and avoid embarrassment for losing a fight to someone bigger and stronger than him.
That it got caught in a machine
In the book Curley lost his hand due to a fight with Lennie however, Slim tells Curly to keep quite and tell everyone that he lost his hand in a machine.
Slim tells Curley that his hand got caught in a machine because he knows the truth about how Curley actually injured his hand in a fight with Lennie. Slim is aware of the situation but chooses to protect Lennie by keeping the truth hidden and offering a plausible explanation to Curley.
Curley promised to tell people that he got his hand caught in a machine while working on previous ranches, rather than admitting that it was actually crushed in a fight with Lennie.
He took an arrow to the hand.
Curley reacts with anger and a desire for revenge when he finds out about his wife's death. He lashes out and seeks to confront and harm Lennie, believing him to be responsible for what happened. Curley's reaction is fueled by his grief and sense of loss, as well as his need to assert power and control in the situation.
Curley attacks Lennie out of anger and aggression, blaming him for the death of his wife. In retaliation, Lennie crushes Curley's hand, revealing his immense strength and inadvertently causing Curley significant harm.
Curley agrees not to get Lennie fired after he crushes his hand because he knows that if Lennie is fired, George will not allow him to work on the ranch anymore. Curley wants revenge for his injured hand, so he decides to keep quiet about the incident to ensure that Lennie will stay on the ranch and suffer the consequences of his actions.
It is not explicitly stated in the novella "Of Mice and Men" whether Curley's wife knows the true cause of her husband's injured hand. However, she may have suspected that Lennie was involved, as she mentions it in passing during a conversation with Lennie in the barn.
Curley need to go to a doctor because his hand was crushed.
it got caught in a machine
Slim persuades Curley not to tell his father the truth about how his hand was really crushed by emphasizing that Curley's reputation as a tough guy would be ruined if the truth came out. Slim suggests that Curley should claim he got his hand caught in a machine instead to save face.
Curley attacks Lennie out of rage and insecurity. He is a small man who feels threatened by Lennie's size and strength, and he targets Lennie in order to assert his dominance over him and prove his own toughness to the other ranch workers. Curley's aggressive behavior reflects his own feelings of inadequacy and a desire to prove himself.
He is a dirty devil, he uses it in a sexual act with his wife