Dr. Gustafson's advisor, Dr. Bille Carlson, had identified a gaping hole in 18th or 19th century math: no one had ever figured out the asymptotic behavior of a very important class of special functions (elliptic integrals). It wasn't oversight; it was just hard to do. But a fellow named Roderick Wong had recently noticed a trick that looked like it might be applicable, so Dr. Gustafson went to work.