cetera? >> i think you have got a little bit of both of those reasons as for what happened yesterday, that massive leap, the epic move of the dow up over 1,000 points, 1,086 points, at this point it is fair to say that euphoria has moved to the sidelines. the dow down already 300 points in just the first opening seconds of the opening bell. this isn't such a huge surprise. you see a historic move to the upside and the next day you see a swing to the downside. traders were scratching their heads trying to explain yesterday's move. yes, a lot had to do with the alga rhythms, the computerized fast trading that goes on her. the other part is a lot of investors saw the move that the dow and the s&p 500 have been making over the last couple of months. the dow has lost 5,000 points.