Comment Re:Stock Market Shenanigans (Score 3, Insightful) 265
The trick being, of course, that they are all 100% worthless for predicting future trends.
Actually, they're pretty good at predicting broad trends. It's just that they're not good at predicting specific outcomes. In the same way that understanding the odds of roulette doesn't let you predict what number will come up on a specific spin. The only way to really use the odds is to bet across the entire table to take advantage of the trend - that's what the house does.