Sam is Jill's grandfather. Sam promises Jill that if she studies hard in school and stops smoking pot with her boyfriend on weeknights, he will pay for her college tuition at "any school she wants to attend." Jill agrees. Jill studies hard in school and she stops smoking with her boyfriend on weeknights. Jill graduates high school with a $3\mathrm{.}0$ GPA and based on her grandfather's promise, she applies to University of Michigan, where the tuition is high. Her grandfather, who went to Ohio State, hates the University of Michigan and refuses to pay for Jill's tuition there. Did Sam violate the contract to his granddaughter? Is the contract valid? De grandfather? How would you advise Jill moving forward? How would you advise Sam?