Why does dodger take Oliver to Fagin?

Dodger takes Oliver to Fagin to introduce him to a life of petty crime and thievery. Fagin is a manipulative figure who trains young boys to pickpocket and steal, and Dodger sees potential in Oliver to join their gang. By bringing Oliver to Fagin, Dodger hopes to recruit him, believing that he would benefit from Fagin's guidance and become a successful pickpocket. This act sets the stage for Oliver's struggles between the criminal world and his innate desire for a better life.