Correction: Understanding Stock Market Mechanics and Index Fund Benefits
Corrected by Emir Baycan · Full-Stack Developer, Mobile App Builder and Web Platform Founder with expertise in SEO, automation, SaaS, AI visibility, DevOps and scalable digital products
Emir Baycan found something wrong, outdated, or unsupported on this page and proposed a fix. The publisher accepted the correction.
- Role
- Correction
- Publisher
- When Notes Fly
- Topic
- Concepts
- Status
- Accepted
- Date
- 28 July 2026
The exact change
The article's fee table gave $100,000-at-7% 30-year values of about $753,000, $622,000, and $558,000; said EMH makes outperformance impossible; said every historical 20-year real return was positive; gave one fixed SPIVA underperformance rate; and framed Barber-Odean, DALBAR, and Carhart as universal causal rules.
Recomputed the fee table at the stated net returns, qualified the EMH and 20-year-return claims, scoped the SPIVA figure, and framed the investor-behavior studies as sample findings rather than universal laws.
Suggested change
See before/after.
Why this is better
The fee figures were an arithmetic error and the other claims were more absolute than the evidence supports. Corrections recompute the table and scope the claims rather than adding new sources.
How this record is verified
- The contribution is tied to a real, identified contributor, not an anonymous byline.
- It counts only because the publisher, When Notes Fly, accepted it. Self-claimed work earns nothing.
- It is recorded against a specific page and cannot be bought or edited after the fact.