• Optimnem Blog
  The Blog of Daniel Tammet. (wiki) Daniel Paul Tammet (born January 31, 1979) is a British autistic savant (though he has learnt how to manage social interaction) gifted with a facility for mathematics problems, sequence memory, and natural language learning. He was born with congenital childhood epilepsy. Experiencing numbers as colors or sensations is a well-documented form of synesthesia, but Tammet is unique in how specific and detailed his mental imagery of numbers is. He claims that in his mind each number, up to 10,000, has its own unique shape and feel, and he can "sense" whether a number is prime or composite and "see" results of calculations as landscapes in his mind.
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• Optimnem: The Official Website of Daniel Tammet
  Daniel Tammet is a high-functioning autistic savant. He can calculate huge sums in his head in seconds and instantaneously recognise prime numbers, but he finds emotions difficult to understand and has trouble telling left from right. One of fewer than fifty such people living worldwide, Daniel is unique in his ability to articulate his savant experience. He describes his visual experience of numbers as complex synaesthetic shapes with colour, texture and motion. Thirty-seven is lumpy like porridge, while eighty-nine reminds him of falling snow. Sequences of digits form visual landscapes in his mind.
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  Note: (wiki) Daniel Paul Tammet (born January 31, 1979) is a British autistic savant (though he has learnt how to manage social interaction) gifted with a facility for mathematics problems, sequence memory, and natural language learning. He was born with congenital childhood epilepsy. Experiencing numbers ...more as colors or sensations is a well-documented form of synesthesia, but Tammet is unique in how specific and detailed his mental imagery of numbers is.

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