This document summarizes key points from a business law textbook about contractual capacity and the ability to disaffirm contracts. It discusses who has contractual capacity, such as minors, intoxicated or mentally incapacitated individuals. Minors can disaffirm non-necessary contracts both during and after reaching the age of majority. There are exceptions where contracts cannot be disaffirmed, like court-approved contracts, marriages, and work contracts. The document also addresses the consequences of misrepresenting one's age when entering a contract.