The worst example I've ever encountered was a book claiming to teach the leadership principles of Genghis Khan.
Apparently the Mongol who butchered and enslaved the largest land area in the history of conquest, was a tolerant and forgiving leader who promoted "can-do" self-motivators and... endless honeyed BS about what a good leader is.
Nothing in the book whatsoever about the benefits of slaughtering all the male adults of newly acquired companies, and giving their wives as presents to underlings and the acquisition team lawyers. 0/10 for historical accuracy.
Apparently the Mongol who butchered and enslaved the largest land area in the history of conquest, was a tolerant and forgiving leader who promoted "can-do" self-motivators and... endless honeyed BS about what a good leader is.
Nothing in the book whatsoever about the benefits of slaughtering all the male adults of newly acquired companies, and giving their wives as presents to underlings and the acquisition team lawyers. 0/10 for historical accuracy.