I hade watched them. He’s just repeating things. He had no grasp of engineering or astrophysics at a fundamental level. He is a sales guy.

The same is true for his software engineering skills. They are novice level, at best. Watching his engineering brainstorm sessions at Twitter was a painful experience. He only knows how to talk the talk. He constantly misuses key tech jargon and design patterns. His engineering group will literally come whenever he makes a suggestion.