While the targeted price level failed as support the example given demonstrated yet again the tendency of the intersection of trend lines to indicate the TIMING of a major move.
Finding the timing of low risk/high reward trades is more important to a wise trader than being correct on an individual call. They facilitate minor losses when wrong and large wins when correct. Taking a series of low risk/high reward trades should be the ultimate goal of any trader.
Famous trader Jesse Livermore once said the secret to successful trading is 'finding the point of capitulation'.
Identifying low risk/high reward time periods is one solution to his challenge.