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One thing we can be sure of is that with more automation, the possibility of time of day will be crucial. Say right on the dot at 2pm, you may notice a burst of volume. On the hour seems to be auto systems going off. I do believe that scalping and extreme short-term trading is very difficult against computerized trading, especially news trading in forex.

I think trends may happen but in bursts because as soon as a system becomes profitable, the market assimilates it and make it stop becoming profitable so there's constant optimizing and re-optimizing and new strategy out in the market.

It's true the patterns still exist even after the players have changed.