But as ever, trust this move as far as you can throw it
                                
                                
                                    (Newser) -
                                    Downbeat earnings put the kibosh on yesterday’s outbreak of optimism on Wall Street, sending stocks down at the open. The Dow dropped 107 points, while the Nasdaq and S&P fell 1.7% and 1.4% respectively, the Wall Street Journal reports. Dow components DuPont, Caterpillar, and Pfizer all...