George Lucas first introduced the concept of a vergence in Star Wars: The Phantom Menace, where Jedi master Qui-Gon Jin refers to a young Anakin Skywalker as “a vergence in the Force.” The idea of a concentration of Force power was later expanded to refer to physical locations, like the mysterious pit Rey explores in The Last Jedi, the home of the witches of Brendok in The Acolyte, and the cave on Dagobah where Luke Skywalker has his dark vision in The Empire Strikes Back. So it’s fitting that, thanks to a new Star Wars book, the same concept once applied to a young Anakin is being used in a clever way to offer new insight into his fractured psyche as Darth Vader.
