Global Retirement System Challenges - The world could face a $400 trillion shortfall in retirement savings by 2050 [1] - Every country's retirement system is unique, shaped by its specific development path [1] US Retirement System Analysis - The US retirement system has both strengths and weaknesses [4] - The US has a progressive benefit formula in its social security program, benefiting lower-wage earners [4] - The US saves more than most other countries and has among the highest retirement incomes globally [6] - The US has significant assets in defined contribution plans and some defined benefit plans [3] Potential Reforms and Considerations - Mandatory defined contribution systems may face resistance in the United States [2] - Instead of focusing solely on features, the US retirement system should be evaluated based on its results [5] - The pension index aims to facilitate understanding of what works and what needs improvement in retirement systems [5]