This is just one example se-lected from a countless number in which millions of people spent billions of dollars on a worthless product.
It reminds me pop-it and fidget spinner craze which claim to decrease stress level who play with them. But I think this is the sale tactics. At the end of the day, they earn millions. Here is an article on Forbes. https://www.forbes.com/sites/brucelee/2017/05/19/heres-the-science-behind-the-fidget-spinner-craze/?sh=44fb0cb53af0
Profi ciency in reading, writing, and arithmetic has traditionally been the entry-level threshold to the job market, but the new workplace re-quires more from its employees. Employees need to think critically, solve problems, innovate, collaborate, and communicate more effectively. —American Management Association, 2010, p. 1
That's why multidisciplinary important in contemporary career. People need to improve themselves not only in their own areas of expertise, but also in other areas like modern logic and critical thinking.