Terrorism poisons everything. The greatest damage, of course, results from the lives that are lost and the people who are injured. Nonetheless, it’s natural to wonder whether an event such as yesterday’s bombing at the Boston Marathon is likely to have a longer-term impact on the economy and the stock market. Anything that makes people more anxious and uncertain about the future has a negative effect on business and on stocks. The bombing occurred shortly before 3:00 p.m. EDT, and the Dow – which had earlier in the day started to rally from the day’s lows – fell another 120 points in the last hour of trading. Is that ... (full story)