Through a complicated mathematical analysis Willcox states that omitting homosexuals, the 3 important factors in epidemiology of gonorrhea are the promiscuous female infectious pool, the males who contract gonorrhea from them, and other females infected by these males. The return of infections by the infected male to the female infectious pool is categorized as "Feedback". He demonstrates that small changes in "Feedback" produce large changes in the infectious pool and that treatment failure rates also have a similar effect. The most important influence on "feedback" is promiscuity.