To his shock, when Peter places his superEEG on the head of a willing terminal patient, he afterwards finds in the readouts a small electrical field leaving the brain after death. He shares this discovery with his friend Sarkar Muhammed, who runs his own startup firm doing expert system design. Sarkar declares it a soul, which Peter, a skeptic, is reluctant to believe. To maintain precise scientific language, they call it a soulwave: "The soulwave had a distinctive electrical signature. The frequency was very high, well above that of normal electrochemical brain activity, so, even though the voltage was minuscule, it wasn't washed out in the mass of other signals within the brain."