"NSA," Ngemi corrects her. "Disability pension, I imagine, though I'd certainly never ask him. He has perhaps ten thousand pounds in net worth, I believe. Most of it, at any given time, in calculators. No fortune. Not even enough to keep them, really. A collector, he must buy, but a poor man, he must sell." Ngemi sighs. "It is that way for many people, not least myself."