Most traders don't get this. They say oh adx or whatever doesn't work is because it's lagging. It doesn't work because it's not predictive. Because an indicator does something when a trend happens or reverses or whatever doesn't mean that when the indicator does that, a trend is happening. Of course it's lagging, it does calculate based on what price did. But it has no predictive value so it's worthless. This shocks me to say, but I think volume may actually be a predictive indicator. In some cases.