Nephew, who is 18, has been admitted to several colleges but is thinking about bypassing college to become a pottery maker. Uncle promises Nephew that if he in fact goes to college instead, and graduates, Uncle will give him $50,000. He adds that if Nephew graduates from Uncle's alma mater, Hearst College (where he has been admitted), he will give him $100,000. Nephew decides to enroll at Hearst, but does not like it and transfers to the University of California, Sunnydale. Uncle makes no objection to him switching schools, instead telling him that Hearst "may not be for everybody." Nephew graduates from UC Sunnydale, whereupon Uncle gives him $50,000. Nephew asks for the whole $100,000, claiming that Uncle waived the condition. What result and why?