Quote from aus_SPIder:
Heres how my system draws trendlines (objective):
Plots Keltner channels at X ATR above and below the price action
Runs linear regression on keltner points. The resulting linear regression is my trendline, and its followed religiously.
Its not a "valid" trendline in the sense of traditional technical analysis (in that it rarely hits the price) but its extremely useful in a choppy/sideways market as a point of S/R as keltner channels during this time are usually flat and so the resulting linear regression line is flat, forming a good S/R region.
I think traditional technical analysis does work, S/R, trendlines/ channels (to a certain degree), volume divergence and peak-trough progression. The problem with TA is that is so far gone from its original purpose today that not many people even understand why it was developed: to understand and profit from market psychology. Technical Analysis is not statistics, it is the study of psychology, psychology is subjective but there are great psychologists (freud) and poor ones (my local shrink). So yes TA does work, and i have no doubt that trendlines do work for good traders, just not for me.
The problem with people is that they always look for a statistical answer in TA. But they forget that TA is essentially a study in psychology, its an art form. Looking for that magic indicator may have worked in the 1970s and 1980s if you developed say on balance volume but today its all useless.
When i was a discretionary trader i used to only use indicators when S/R was broken, or peak to trough analysis yielded troughs lower than previous trough (in bull market) and vice versa. Indicators should be used as confirmation of break or reversal and not as the sole indicator of one. RSI is a perfect example virtually every dumb trader i know thinks it can be used to identify overbrought/oversold and then they complain that its useless when it fails. They misunderstand that RSI was initially meant to confirm a SWING FAILURE and not as a standalone overbrought/oversold indicator.