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In the 1980s , as an undergraduate working toward a degree in mathematics at Drew University in Madison , N.J ., she found herself particularly intrigued by courses on symbolic logic and infinity . " Computer programmer Bob Brill of Ann Arbor , Mich ., is another artist who has been playing with pursuit curves for a long time . Ackland and Butler reported that the threshold depends on a single criterion : the fraction of competitors in a given event who encounter others and can stay with them . Combs used an address at an office park called Thunderbolt Place in Chantilly , Va ., which was also used by other Wilkes ' companies . Physicists Petr Seba and Milan Krbalek of the Czech Academy of Sciences have found that Cuernavaca buses move about like randomly interacting subatomic particles . When hundreds gather for the traditional four-hour service on Sunday mornings , it is almost like being in Egypt . That 's what happened when retired geologist Charles J. Robinove of Monument , Colo ., tried out an electronic travel edition of the game . Physicists Graeme J. Ackland and David Butler of the University of Edinburgh address this sort of " pack formation " in the Sept. 13 Nature . By that time he already had a mathematical article in print and , in the following year , submitted an entry for a prestigious competition sponsored by the Paris Academy on the best arrangement of masts on a ship . With constant initial separation ( as in time trials ) and a random distribution of competitor speeds , " packs are ultimately formed , but only after a considerable time , " Ackland and Butler discovered . Such investigations recently won second place for high school student Jacob Licht of West Hartford , Conn ., in this year 's Intel Science Talent Search ( STS ) . " An important difference is that our packs tend to be composed of the same competitors throughout , " Ackland and Butler said .