Winfrey asked the most pressing question after Armstrong got his admissions out of the way at the top of the show.
"For 13 years you didn't just deny it, you brazenly and defiantly denied everything you just admitted right now," she said. "So why now admit it?"
Armstrong acknowledged the importance of the question, and said he had no real answer. One suspects that if the question is asked again, and yet again if need be, that an answer might emerge. That's something to look forward to in Friday's Part two.