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Originally Posted by TraderABC
Fact: Indicators (such as RSI roc ma's cles) NEVER predict at best they show a CERTAIN aspect of price's action.
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Most indicators were never designed to predict. Even if they were development would be based on statistical probability. as we all know probability is not certainty.
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Decades ago people used to make a KILLING using moving averages. Try that today... I automaticly backtested DOZENS of moving average combination of 3+ years of data (the my charting software allows for short term cles) they all bombed if spread is taken into account.
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That's just plain false. Some people always try to argue that things change in trading. What has worked in the past doesn't seem to work anymore etc. The fact is nothing changes in trading it doesn't matter which market it is. There are only 3 directions: up down sideways (technically there are only 2 because if you go down to the tick level there is practically always an up or down but that's splitting hs) 2 levels of volatility: high low. These 5 factors are present in every financial market today as they were 10 years ago or a 100 years ago in the Dow. If people made a killing decades ago using MAs then that's because the market was in a trending phase. MAs are designed to measure trend they do that reliably exceptionally well. If the market phase changes to one of consolidation or high volatility MAs do poorly but then that's expected. In that case you use something else like oscillators Fibonaccis support/resistance. If your backtests bombed it's because your 3-year data must have had a significant number of consolidation phases in it which your model did not take into consideration.
Take a look at the daily Dow-J around 1900 to today. It's basically one smooth J-curve rising continuously 0 to 10000. MAs would have captured the majority of not all of that trend.