The Red Flags of Quackery: Expanded Edition

It was almost a year ago that Maki of Sci-ence posted the Red Flags of Quackery, a rather wonderful visual guide to snake oil and quackery.

He promised, at the time, that he would continue to build upon the guide, strengthening the criteria and adding more red flags. Yesterday, he made good on that promise with the New Improved Version 2.

It’s rather good.

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