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- Elon Musk's predictions for achieving his goals often don't stack up, his biographer said.
- Walter Isaacson made the comments during a recent appearance on the "Diary of a CEO" podcast.
- The author cited three examples of when Musk's been wrong about the timing of achieving goals.
Elon Musk's biographer said the Tesla CEO and X owner is "always wrong" regarding how swiftly he can realize his ambitions.