Das Geheimnis von Ishango (PDF)
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A mathematical essay on the Ishango bones and beyond. With new insights and speculations about the oldest mathematical tool in human history. Did the Stone Age people know the prime numbers and the hidden order behind them? Or did they perhaps have visits from aliens? As the physicist and mathematician Freeman John Dyson said so beautifully: “For any speculation which does not at first glance look crazy, there is no hope.”
Photos:
The smaller of the two Ishango bones photographed from four different sides (Web | Print) and exhibited in the Museum of Natural Sciences in Brussels (Web | Print). Photos RBINS
Photo Header iStock.com/vchal
The Secret of Ishango 