With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: After ending his partnership with Martin in 1956, Lewis and his wife Patty took a vacation in Las Vegas to consider the direction of his career. He felt his life was in a crisis state: "I was unable to put one foot in front of the other with any confidence. I was completely unnerved to be alone". While there, he received an urgent request from his friend Sid Luft, who was Judy Garland's husband and manager, saying that she couldn't perform that night in Las Vegas because of strep throat, and asking Lewis to fill in.
text_B: Would a psychologist likely conclude that Lewis had developed a defense mechanism for himself, using familiar routine to protect himself from uncertainty around him?
NO.