Ex-Theranos CEO Elizabeth Holmes says "I don't know" 600+ times in never-before-broadcast deposition tapes.

Ex-Theranos CEO Elizabeth Holmes says "I don't know" 600+ times in never-before-broadcast deposition tapes. https://t.co/jVKf9skTSt pic.twitter.com/kIGgoIHtYL

— ABC News (@ABC) January 24, 2019