Arrogance is what made it possible for Wolff it have such access to staff.
According to accounts, Wolff had 12 days floating around the White House with access to many people.
Wolff was also clever to slam some early critiques of Trump, giving Trump a false sense of support.
Trump thought that Wolff would write a flattering tale, since he's a friend of Murdoch.... so much for that.
DO SOMETHING!