Given that his own grandmother was a sex trade worker who left his mom when she was 18, Kingstone visited the cities where his grandma was known to have work. He retraced her steps and, stitching the stories of grandmothers together is attempting to fabricate the Ultimate of Grandmothers.

Of course, given the heterogeneity of grandmothers – and any given social group for that matter (including male sex trade workers) – one is never capable of reaching this one, core essence. Humanity is too complex and precious for that.