An atheistic electrician has three interests: neurology, theology and electronics. As a neurologist he might have specialized in the physical characteristics of ideas—how they occur in the brain as chemicals and signals. As a theologian he would have specialized in the question of the "whether or not" of God. As an electrician and electronics buff he strives for circuit efficiency. He reads that neurologists calculate that the human brain draws no more power than a 25-watt light bulb. Then he realizes that God is only an idea, a self-illumination extant only in the chemicals of the brain. Then he realizes that although this God is by association no more powerful than a 25-watt light bulb, this same God is a 25-watt light bulb that illuminates the entire Universe for the people who believe in Him.

The electrician's strivings toward efficiency win him over; he becomes a Catholic and denounces his earlier existence as quaintly heretic. He forgets the marvelous chemicals of his brain to become their result.