I think that the problem with most of the technical analysis strategies is that there are different timeframes. One of them - lets say 1 minute bars chart - would show that the price is in a certain range. You draw these lines, wait for price to reach the top line and bet on the hypothesis that the price will reach the other side of the range sooner or later. The problem is that on 15 minutes bars chart at the same time there is a strong uptrend. So this is definitely a bad idea to bet on a downward movement, because the market situation generally assumes you should be doing long trades. Moreover, when you look at 1 hour bars chart at the same time, you might see that the price is quite near to the strong resistance level. This means that within 10 minutes it might break out up from 1 minutes bars range, continue the uptrend of 15 minutes bars chart, bounce on the 1 hour resistance level and drop quite fast below the initial entry point. I know it sounds quite complicated, but this is how technical analysis works.