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17-Dec-2017 10:25

He challenged research subjects to connect all nine dots using just four straight lines without lifting their pencils from the page.Today many people are familiar with this puzzle and its solution.In the 1970s, however, very few were even aware of its existence, even though it had been around for almost a century.If you have tried solving this puzzle, you can confirm that your first attempts usually involve sketching lines inside the imaginary square.

Guilford was one of the first academic researchers who dared to conduct a study of creativity.

your conclusion: that the second experiment disproves the theory that thinking outside the box is useful in solving problems, is itself a fallacy.

it only proved that telling someone to 'think out side the box' is, in most cases, ineffective.

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.

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