Jacob promises to pay Ariel $200 if she will steal Jessica's business law textbook. Jacob is angry at Jessica because she laughed at his new tattoo.

Jacob promises to pay Ariel $200 if she will steal Jessica’s business law textbook. Jacob is angry at Jessica because she laughed at his new tattoo. Ariel steals the business law book but Jacob, who has calmed down, refuses to pay Ariel. Discuss whether or not Jacob must pay Ariel.