Run that by me again. Were there "a variety of catalysts" for yesterday's 900-point market move, or was there "no single catalyst"? Was it lower interest rates overseas or lower interest rates at home?That depends on where you go for your news. Reports from major news organizations about why the market went up sharply yesterday were endlessly contradictory. First, from The Wall Street Journal: "There were a variety of catalysts for the day's action, including news that lending markets are slowly unfreezing, a report that the government may be preparing to lend $5 billion to General Motors and hopes that the Federal Reserve will announce another interest-rate cut Wednesday. The Fed could push its target short-term lending rate down to 1%, which would equal the 40-year low in 2003." Set that alongside The New York Times, which went with the more generally mystical coming-around-to-buying angle: "There was no single catalyst for the surge, and market specialists said investors seemed to be coming around to the idea that stocks were worth buying, given that the Dow had plunged 32 percent since the end of August." The New York Post, for its part, sided more with its News Corp. ( NWS) colleague, the WSJ. The Post said that the rally was driven by "a technical 'perfect storm' of factors converging at the depths of October's wretched slump to reverse the worst month on record for stocks." But instead of leading with General Motors ( GM) and the Fed, the Post went with the yen and computer trading models. It also, it bears mentioning, saw significance in Halloween, placing the calendar in the lead: "Traders launched a global rally yesterday to help lift flattened portfolios off the ground and ignite investor spirits again -- just in time for Wall Street's hallowed October effect."