Puzzles have all the data you need, and a right answer. It’s just a matter of time and you’ll figure it out. Traditional project management can be used to solve puzzles.
Mysteries have wrong and missing data, and there are tons and no answers. Example – “World Peace”. There is no linear way to figure it out. It requires experimentation and failure to ‘tack’ to an innovative intervention. It requires thinking a different way and completely different, interactive tools.
Thoughts based on "Design Thinking" www.coursera.com