This rule is not by accident.
And this rule is applicable even to horizontal lines. It is just what it is. It happens everywhere, in all timeframes, in all markets.
Make your hands dirty and test it for yourself, even with horizontal lines. Watch out for hard breaks like the one in this chart...INTENTION is "a" key...
So, what's a trader gonna do with this?
Observe, learn, apply.
Well, 2019 will be interesting.
But the following years even more...2020...we will see some Fireworks...2021...probably a huge "OUCH"!
Sheriff will quit since the vest will become obsolete.
However, prepping for some decent moves which shall put a cherry on my pension ;-)
T'care out there and thanks for your comments.