How FDCPA Validation Delivers What “Private Student Loan Forgiveness” Only Promises: The Thesis-Defining Explanation of Why There Is No Formal Private Student Loan Forgiveness Program, Why the Consumer-Protection Framework Under Fair Debt Collection Practices Act 15 U.S.C. § 1692g Is the Real Mechanism, and How the Integrated Framework of Validation + Settlement + FTC Holder Rule + State Statute of Limitations + Bankruptcy Section 523(a)(8) Delivers Substantial Debt Reduction for US Private Student Loan Borrowers in 2026