Vader's need to protect his family had caused the downfall of the Jedi it was worth remembering. He took it to obsessive, freighting levels. This was at least mostly benign.

Vader listened, taking the words into account. Which words were chosen instead of others. "Force visions can be manipulated, but he may not have been taught that." A lesson Vader himself had come to learn and appreciate far too late. "Was that one action? Or?"