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The computer version of Scrabble provided an average of 2.84 vowels per hand , quite close to the expected number , 2.94 vowels per hand . In effect , the Chokwe reduced the memorization of a lusona ( singular of sona ) to two numbers and a geometric algorithm for constructing one or more curves to create the desired pattern . For each of the two versions of the game , Robinove drew 100 initial hands , totaling 700 letters , then looked at the vowel frequency . " Its definition combines both additive and multiplicative aspects of the integers , and the ' greedy ' property of its definition produces a complicated dependence on the earlier terms of the sequence . He decided to investigate the situation by comparing the performance of the handheld device with that of a computer edition of the game . That 's what happened when retired geologist Charles J. Robinove of Monument , Colo ., tried out an electronic travel edition of the game . If not , was the problem ever identified and fixed in later production runs of the handheld game ? From the beginning of the Iraq invasion , the CIA was forced almost constantly to revise its game plan . " I 'm sitting here but I do n't feel secure , " said Essam Nabil , a 40-year-old Christian who was at the church when the attack occurred . " The EKG sequence has a simple recursive definition , yet seems surprisingly difficult to analyze , " the researchers noted in a preprint describing their findings .