speed dating sf yelp - Fifty years of obsidian hydration dating in archaeology

If you have tried solving this puzzle, you can confirm that your first attempts usually involve sketching lines inside the imaginary square.

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

He challenged research subjects to connect all nine dots using just four straight lines without lifting their pencils from the page.

At the first stages, all the participants in Guilford’s original study censored their own thinking by limiting the possible solutions to those within the imaginary square (even those who eventually solved the puzzle).

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.

Management consultants in the 1970s and 1980s even used this puzzle when making sales pitches to prospective clients.

Because the solution is, in hindsight, deceptively simple, clients tended to admit they should have thought of it themselves.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.Indeed, the concept enjoyed such strong popularity and intuitive appeal that no one bothered to check the facts.No one, that is, before two different research teams—Clarke Burnham with Kenneth Davis, and Joseph Alba with Robert Weisberg—ran another experiment using the same puzzle but a different research procedure.Solving this problem requires people to literally think outside the box.

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