Historical examples provide valuable lessons on public policy for the UPSC examination. Examining cases such as the impact of the Green Revolution or the implementation of the Right to Information Act reveals the intricacies of policy-making. These examples illustrate the importance of understanding socio-economic factors and stakeholder engagement. Candidates can analyze successes, failures, and unintended consequences, gaining insights into effective governance. Such analyses enable a nuanced discussion of current challenges, making candidates more equipped to propose relevant and informed solutions.