However, beware of "new" PDFs that are merely old editions with new covers. Always check the copyright page. Look for references to the 2008 financial crisis and the inclusion of behavioral biases like "Loss Aversion." Without those updates, you are reading history, not modern theory.
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Disclaimer: Always respect copyright laws. This article is for educational purposes and does not constitute financial advice. However, beware of "new" PDFs that are merely