Editor's Comment: I ran into the Farnam Street blog and Parrish quite by accident. What I found is a fascinating learning community "dedicated to improving self-education in a learning community environment". This particular article relates to Howard Marks' recently published book, "The Most Important Thing". Both Marks' book and Parrish' blog primarily interest the investment community but this article relates to a much broader point: how our first thoughts can mislead us. A real great reminder for me.