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  1. Øyvind Samuelsen

    If you can't explain it simply, you simply don't understand it well enough

    If you can't explain it simply, you simply don't understand it well enough
  2. Øyvind Samuelsen

    +

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  3. Øyvind Samuelsen

    '' If you can't explain it simply, you simply don't understand it well enough''

    '' If you can't explain it simply, you simply don't understand it well enough''