So much for the basic theory. Now, when he was at Pearl Harbor, he discovered something that, in retrospect, should have been profoundly disquieting. Namely, that ejaculations obtained in a whorehouse (i.e., provided by the ministrations of an actual human female) seemed to drop [sigma] below the level that Waterhouse could achieve through executing a Manual Override. In other words, the post-ejaculatory horniness level was not always equal to zero, as the naive theory propounded above assumes, but to some other quantity dependent upon whether the ejaculation was induced by Self or Other: [sigma] =[sigma sub self] after masturbation but [sigma]=[sigma sub other] upon leaving a whorehouse, where [sigma sub self] > [sigma sub other] an inequality to which Waterhouse’s notable successes in breaking certain Nip naval codes at Station Hypo were directly attributable, in that the many convenient whorehouses nearby made it possible for him to go somewhat longer between ejaculations.