In order to better understand the three-body civilization, it is planned to send the human brain to the three-body civilization in the ladder plan; Killed Vadim in order to choose the most suitable brain; In order to run for the assassination of the sword-bearer, and to better study the curvature-driven spacecraft, an antimatter weapons army was formed. ...
All these are unscrupulous ways for Vader to move forward. This is his belief and extremely rational thought-losing humanity and losing a lot; Lose the beast, lose everything.
In the eyes of ordinary people, Vader is full of animal nature, loses humanity and is not accepted by society.
But in the universe, in the dark forest law, Vader's beast can survive. Cheng Xin doesn't understand, human society doesn't understand, and everyone may understand, but human beings have love, as if a newborn baby can't accept this dark law and will eventually be destroyed in two dimensions.
In fact, Vader is still wrong. He did nothing at all. He keeps his promise. If he goes forward by hook or by crook according to his theory, he should not keep his promise, and the world will have a different ending. Some readers even commented that breaking promises for the first time was right. After all, he didn't go forward completely by hook or by crook. He lost to Cheng Xin and to human society.