If you don't believe in the power of ratio's and market harmonics juts take a look at this chart. All of this happened before I was awake this morning, but if you follow the pink lines you'll see a larger AB=CD pattern completing at a 141.4 fib extension & 161.8 fib inversion zone, only to be followed by a smaller AB=CD pattern that completes at similar ratio confluence.  Amazing how this stuff occurs. All that's needed is the skill to recognize it beforehand and the confidence to trade it. And a good set of rules of course.