subjective. Identify a pattern, eg: as in the chart shown below. Subtract the lower figure from the higher one, add the difference to the higher figure gives your target. The chart is from a pay site where I read his free stuff.
In the example here, I would've ignored the candle tails in early 2016 which would give around 2375 as a target. Before you po po this out of hand, it can be surprising. I must stress that the 'beast' can do whatever it likes and fail earlier or bust right on up through but it gives one a 'ball park' figure to work with.
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