1 the Averages discount everything
2 There are 3 trends in the market: Primary (or Major) Trend is the long term trend in price of stocks, which lasts from one to several years, and its discovery and confirmation is the main purpose of Dow Theory, Secondary reaction is corrective in nature, interrupting and moving in opposite direction of Primary Trend, (and Minor trands are day-to-day fluctuations). Also know as Tide, Wave and Ripple.
3. Primary Uptrends go through 3 above mentioned phases (bit similar to elliott wave 5 waves)
4. Primary Down trends idem in bear markets
5. THE TWO averages (industrials and Transports) MUST confirm each other. To signal a bear trend , both DJIA and Transportation Average must drop below the lows of their respective previous secondary levels. (Bull signal reverse)
NB. DT does not stipulatre a time period beyond which a confirmation becomes invalid, but the closer in tiome the signals occur, the strtoinger the signal is perceived to be.
A Trend remains in EFFECT until a reversal has been signalled by both Averages!!
6. VOLUME MUST confirm the trend, and only CLOSING prices are considered.
Looking at the chart on Bgold's thread,I think he would take the penetration of that 'double-bottom' low last december as a lower low.but the transports aren't confirming.