The following is reprinted from the book Uncle John's Unsinkable Bathroom Reader.
The next time you find yourself rolling a pair of dice, know that you’re tapping into something primordial- keeping alive an ancient tradition that began long before recorded history.
DEM BONES
(Image credit: Vassil)
Archaeologists can’t pinpoint the first human who threw dice, but they do know this: Unlike many customs that started in one place and then spread, dice-throwing appeared independently all across the populated world. The oldest known dice -dating back at least 8,000 years- consisted of found objects such as fruit pits, pebbles, and seashells. But the direct precursors of today’s dice were bone: the ankle bones of hoofed animals, such as sheep and oxen. These bones -later called astragali by the Greeks- were chosen because they are roughly cube-shaped, with two rounded sides that couldn’t be landed on, and four flat ones that could. Which side would be facing up after a toss, or a series of tosses, was as much a gamble to our ancestors as it is to us today.
The first dice throwers weren’t gamers, though -they were religious shamans who used astragali (as well as sticks, rocks, or even animal entrails) for divination, the practice of telling the future by interpreting signs from the gods. How did these early dice make their way from the shaman to the layman? According to David Schwartz in Roll the Bones: The History of Gambling:
The line between divination and gambling is blurred. One hunter, for example, might say to another, “If the bones land short side up, we will search for game to the south; if not, we look north,” thus using the astragali to plumb the future. But after the hunt, the hunters might cast bones to determine who would go home with the most desirable cuts.
SQUARING OFF
And with that, gambling -and dice gaming- was born, leading to the next big step in dice evolution. Around 7,000 years ago, ancient Mesopotamians carved down the rounded sides of the astragali to make them even more cube-like. Now they could land on one of six sides, allowing the outcome to become more complex. As their technology advanced, materials such as ivory, wood, and whalebone were used to make dice. (Image credit: Swiss Museum of Games)
It is believed that the shamans were the first ones to make marks on the sides of the dice, but it didn’t take long for them to roll into the rest of society. Dice first appeared in board games in Ur, a city in southern Mesopotamia. Now referred to as the “Royal Game of Ur,” this early version of backgammon (circa 3,000 BC) used four-sided, pyramidal dice.
However, the most common dice, then and now, are six-sided cubic hexahedrons with little dots, or pips, to denote their values. The pip pattern still in use today -one opposite six, two opposite five, and three opposite four- first appeared in Mesopotamia circa 1300 BC, centuries before the introduction of Arabic numerals.
WHEN IN ROME
In the first millennium BC, civilizations thrived in Greece, India, and China- and they all threw dice. In Rome, it was common for gamblers to call out the goddess Fortuna’s name while rolling a 20-sided die during a game of chance. But they had to do it quietly -dice games were illegal in Rome (except during the winter solstice festival of Saturnalia). Not that that stopped anyone from playing it: One surviving fresco depicts two quarreling dicers being thrown out of a public house by the proprietor.