
This article explains how an artificial brain has able to taught itself to count the number of objects in an image without actually counting them.
"Because the model was not preprogrammed with numerical capabilities, the feat suggests that this skill emerges due to general learning processes rather than number-specific mechanisms. "It answers the question of how numerosity emerges without teaching anything about numbers in the first place," says Marco Zorzi at the University of Padua in Italy, who led the work."
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Neural network gets an idea of number without counting