I'm not really big on the idea of any method or indicator that claims to predict the future. Usually, I see repeating patterns as nothing more than market psychology or coincidence.
That said, it's really interesting to see how the 2017 boom/bust pattern looks quite similar to the recent run-up and drop that we've seen, and in particular the drop to 8k and below.
So, what's at work here? Market psychology on display? Or bots coalescing to form a familiar trading pattern?