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It was an appealing and apparently convincing message.
Indeed, the concept enjoyed such strong popularity and intuitive appeal that no one bothered to check the facts.
Overnight, it seemed that creativity gurus everywhere were teaching managers how to think outside the box.
Management consultants in the 1970s and 1980s even used this puzzle when making sales pitches to prospective clients.
There seemed to be no end to the insights that could be offered under the banner of thinking outside the box.
Speakers, trainers, training program developers, organizational consultants, and university professors all had much to say about the vast benefits of outside-the-box thinking.
In other words, the “trick” was revealed in advance.
If you have tried solving this puzzle, you can confirm that your first attempts usually involve sketching lines inside the imaginary square.
That this advice is useless when actually trying to solve a problem involving a real box should effectively have killed off the much widely disseminated—and therefore, much more dangerous—metaphor that out-of-the-box thinking spurs creativity.