The Stamped Spiral

LIT · UNDECIPHEREDThe Phaistos Disc (Crete, c. 1700 BCE, Heraklion Museum) carries 241 stamped sign tokens (242 counting one erased) of 45 distinct signs, in 61 groups spiralling on both faces. Linear A (Minoan) and Rongorongo (Rapa Nui) are also unread. None of them is deciphered here. The signs on this page are invented shapes, not the disc's signs.

MODELA question you can answer with counts: what kind of script gives 45 different signs in 241 tokens? Pick a script type, stamp 241 tokens into a spiral, and watch the number of distinct signs grow. Run it many times and a distribution emerges; see where 45 falls. (Alphabets usually have 20–40 signs, syllabaries 40–90, logo-syllabaries hundreds.)

alphabet (26 signs)syllabary (60 signs)large syllabary (90)logo-syllabary (400) stamp a disc stamp 200 discs

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