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Kleroterion

Ancient Greek randomization device

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Through Athenian democracy

The kleroterion was a slab of stone incised with rows of slots and with an attached tube. Citizens' tokens—pinakia—were placed randomly in the slots so that every member of each of the tribes of Athens had their tokens placed in the same column. There was a pipe attached to the stone which could then be fed dice that were coloured differently (assumed to be black and white) and could be released individually by a mechanism that has not survived to posterity (but is speculated to be by two nails; one used to block the open end and another to separate the next die to fall from the rest of the dice above it, like an airlock.) When a die was released, a complete row of tokens (so, one citizen from each of the tribes of Athens) was either selected if the die was coloured one colour, or discarded if it was the alternate colour. This process continued until the requisite number of citizens was selected.

History

Prior to 403 BC, the courts published a schedule and the number of dikastes required for the day. Those citizens who wanted to be dikastes queued at the entrance of the court at the beginning of the court day. Originally, the procedure was based on a "first come, first serve" basis. Beginning in 403 BC, Athenian allotment underwent a series of reforms, and from 370 BC onwards, they employed the kleroterion.

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