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The thumbnail instaread is probably all you need, unless you are in finance or science, although the insight itself is worthy of thought on your own.
Not actually necessary really ~ you'd be just as well to read over some online reviews & the chapter titles as it doesn't really add a lot. That said, if you've no intention of getting Black Swan, then this might be enough to give you an overview. But the reading sounded a little suspicious, like it might be autonomated?