I’ve posted Entry #18 to my weekly Beyond Buy-and-Hold column at the Out of Your Rut site. It’s called Knowing the Mathematics of Investing Hurts More Than It Helps.

Juicy Excerpt: Nine out of ten investors use mathematics not to develop sound strategies but to develop rationalizations for making emotional choices that they couldn’t bear to follow if not the for the “support” offered by mathematics. Investing mathematics is not real mathematics. It’s a game. The aim of investing mathematics is not to uncover realities. It is to cover up realities.