
Originally Posted by
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I discovered this appropriate here since Merlin brought it up and answered. I was typing this out in my own words, but decided to revisit the true source itself and quote (why butcher something done correctly ).
This conversation came from talk about support and resistance.
The words of Darkstar
so What's a trend exactly? Technically it's any unidirectional price movement. As ought to be apparent by now, to get a trend to develop there has to be a larger volume of demand to buy (sell) then there is to sell (buy) across multiple price points.
Trends grow and are sustained for many reasons, however, the most important for our purposes is that they have a propensity to perpetuate their own continuation. In other words, movement in a direction that is specific will generally lure other people to initiate orderflow that will help reestablish the move. This is of course the direct result of the trader's propensity to implement trend following systems. You can stop by any trading system thread on forum to confirm this propensity.
Operating from the assumption that a sustained unidirectional price movement (fad ) is the consequence of significant unidirectional orderflow, this unidirectional orderflow has a inclination to increase in volume as more and more trend following traders find a justifiion for initiating transactions, how can it be that trends are ever reversed? It ought to be evident that the only real way to stop the advancement would be to offer supply in amount then is being demanded, In case you have been following along.