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Tuesday, February 06, 2018

The game dice we use today are as fair as we can design them - but that wasn't always the case. And now researchers have analysed the history of dice to work out when things changed, and why people didn't care about these probabilities until a certain turning point in civilisation. Researchers from UC Davis and the American Museum of Natural History have examined 110 cube-shaped dice dating back to the Roman era and found that their design didn't become "fair" until the Renaissance, when scientific thinking started to come to the fore.


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Eerkens and his co-author, Alex de Voogt of the American Museum of Natural History, have been studying dice design for several years.

Their previous finding revealed that there have been two preferred pip configurations of the 15 possible configurations for a six-sided die throughout the millennia.

In the Dark Ages, between 400CE and 1100CE, dice seem to have grown rare, with relatively few found. They reemerged in the Middle Ages, and at that point were a little more regular in shape.

But the pips were in what is known as the "primes" configuration, popular in Ancient Egypt and Mesopotamia. In this configuration, the pips on opposite sides of a die add up to prime numbers. So 1 is opposite 2, 3 is opposite 4, and 5 is opposite 6.

In the 15th century - around 1450 - dice started to change to what the researchers call the "sevens" configuration. In this configuration, the pips on opposite sides add up to the number 7; so 1 is opposite 6, 2 is opposite 5, and 3 is opposite 4.

This is the configuration still in standard use today.

It may not actually be more fair, but may have seemed so, by separating and "balancing" the larger and smaller numbers on the cube. In turn, this could have led to standardisation.

"Standardising the attributes of a die, like symmetry and the arrangement of numbers, may have been one method to decrease the likelihood that an unscrupulous player had manipulated the dice to change the odds of a particular roll," Eerkens said.


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You could probably still swindle trump supporters with loaded dice.

#1 | Posted by IndianaJones at 2018-02-06 03:35 PM | Reply

On second thought, you won't even need the loaded dice.

#2 | Posted by IndianaJones at 2018-02-06 03:36 PM | Reply

How interesting, thanks I did not know this.

I did know dice games had a long history but I did not know about the pip arrangement

#3 | Posted by PunchyPossum at 2018-02-06 11:51 PM | Reply

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