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29-Aug-2019 09:04

Most people assume that 60 percent to 90 percent of the group given the clue would solve the puzzle easily. What’s more, in statistical terms, this 5 percent improvement over the subjects of Guilford’s original study is insignificant.

In other words, the difference could easily be due to what statisticians call sampling error.

The first group was given the same instructions as the participants in Guilford’s experiment.

The second group was told that the solution required the lines to be drawn outside the imaginary box bordering the dot array.

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Indeed, the concept enjoyed such strong popularity and intuitive appeal that no one bothered to check the facts.

Even though they weren’t instructed to restrain themselves from considering such a solution, they were unable to “see” the white space beyond the square’s boundaries.

Only 20 percent managed to break out of the illusory confinement and continue their lines in the white space surrounding the dots.

In other words, the “trick” was revealed in advance.

Would you like to guess the percentage of the participants in the second group who solved the puzzle correctly?Because the solution is, in hindsight, deceptively simple, clients tended to admit they should have thought of it themselves.Because they hadn’t, they were obviously not as creative or smart as they had previously thought, and needed to call in creative experts. The nine-dot puzzle and the phrase “thinking outside the box” became metaphors for creativity and spread like wildfire in marketing, management, psychology, the creative arts, engineering, and personal improvement circles.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.