Is the stock market headed for a crash?

For the moment, the stock market rout seems to be over. After several days of weakness and back-to-back gut-punch drops on Friday (666 points) and Monday (1,175 points), the Dow Jones Industrial Average (along with the other big indexes) closed out Tuesday on a high note, with the Dow ending up more than 550 points. It was nowhere near enough to make up for the recent bloodbath losses, but it was at least enough to stop the bleeding. Everyone more or less agrees that the markets were...