There are a lot of invisible forces in our lives. Gravity is nice, because it's consistent. Always in one direction, unless you meddle. Things have weight, they have inherent power, because they can accelerate. Straight down. Dependably.
Our tether to gravity is visible, it has knots. So too do our invisible ties. That may be why certain men are drawn to work with ropes, work at height. There's the persistent promise that you will surely be pulled away, predictably. Probably in an unpredictable fashion.