Richard Branson confirms that the phrase "I know" kills innovation and creativity because the mind does not learn what it thinks it has already learned.

Beyond Words: “The moment you say, ‘I know,’ your mind stops learning.” Richard Branson, the British entrepreneur, asserts that the phrase “I know” stifles innovation and creativity, because the mind ceases to learn what it believes it has already mastered. “There is no greater insult to a human being than for others to refuse to believe that they are truly suffering.” Gabor Maté, the Swedish psychologist, points out that the deepest wound a person can endure is being told that their pain is not real.