- Update student loan statistics to current .81T total debt and 42.5M borrowers
- Add proper citations for all key statistics from authoritative sources
- Include Education Data Initiative, Investopedia, and Federal Reserve sources
- Update investment return assumptions with proper context
- Add comprehensive data sources section to footer and disclaimer
- Improves accuracy and credibility of financial calculations
- Eliminates company list that contained unverified claims about SECURE Act 2.0 adoption
- Improves accuracy by focusing on calculator functionality rather than promotional content