Among the trading myths revealed in 2012, writes Ryan Detrick is that a "low" VIX (VXX) is bearish. Anyone who thinks the VIX below 20 shows unusual complacency doesn't have charts going back more than 5 years, he says. Another: That low volume is bearish. Dollar-volume is a fairer indicator, and it's higher now than it was during the 2003-07 run. Put another way, if Apple and Google split 10:1, low volume goes away.