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Originally, the site was constructed with 12 washbacks and 8 stills (4 wash, 4 spirit).In 2013, another 12 washbacks and 8 stills were added, thus increasing the yearly output from the original 5 million liters per annum to 10 million.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.
Although studying creativity is considered a legitimate scientific discipline nowadays, it is still a very young one. One of Guilford’s most famous studies was the nine-dot puzzle.The idea went viral (via 1970s-era media and word of mouth, of course).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.Because the solution is, in hindsight, deceptively simple, clients tended to admit they should have thought of it themselves.
In other words, the difference could easily be due to what statisticians call sampling error.