Once upon a time it was there was a widely held belief that if a witch were to be tossed into a pool of deep water, that proof could be determined as to whether or not the person in question, was truly a witch, by whether they sunk to the bottom of the pool (presumed innocent), or floated (presumed guilty) In either case the outcome was death to the suspect.
Now let's say that generally human emotion does not change and that reactions to fear or greed can be predicted, (suspect a witch, throw the witch in a pool) which can produce short term, higher probability (>than 50% for sake of simplicity) price movements.
Price movement probability can be predicted by reading the tape, by technical indicators and by chart patterns which are based on past human behavior, with the presumption being that if 'X' happens then 'Y' will more likely than not become the result.(this witch suspect, was seen stirring chickenfeet a big iron caldron so this suspect will most likely float, because the last 3 suspects that we saw stirring chickenfeet floated)
Well good, that seems to be an accurate indicator of higher probabilty.
Now what I want to keep an open mind to, is at what point in time do we cease to believe in witches !!!
While human emotions may not change over time, human beliefs do. So I think it is fair to say that we cannot accurately predict what will happen to price movement based on what happened in 1930 etc.
We cannot accurately say that 2003 will be a year of rising stock prices because it has been so every 3 rd year of the presidency since 1939 etc. We can play it on probabilities of history repeating itself.
Over time we have seen, tape reading, techical indicators, chart patterns, predict higher probabilities in price movement direction to varying degrees in varying market conditions and continue to work.
But when patterns fail and price moves against technical indicators and I am left with a stop loss, I figure that the majority of the money took a look at the suspect and said, "why this isn't a witch at all."
Will the time come when a certain witches (price pattern - indicator, etc) cease to be believed in at all ?
My guess is yes - but it will probably be quickly replaced by a warlocks.

And on goes the game, with the predictable emotions remaining constant.
plumlazy