Quoted from usandthem:

Just venting... Why is it that every time I do a simple broad market check at CNBC, there is always story right underneath the averages about supposedly WHY the market is doing what it's doing today? I mean, how the fuck do they know the specifics? For example, today it's, "Dow Falls 200 Points on Fears the Fed Will Overtighten". Tomorrow it might be "Dow Rises 300 Points on Hopes that Fed Will Ease Up". Do they always have to give a half-baked explanation?