Murder By Numbers

There's a dime-store novel called Random Chance

and the hero's an unlikely type,

he invents a craze, the Probability Dance;

his middle name is |.

Random meets a girl named Pi:

they marry for Determinism,

they have only sons, and I know why,

it was acci-dental-ism.

One day Pi gets Random's number

she knows he's just a fake,

if the real thing is Possibility's Rumba,

maybe she made a mistake.

It ends with a gun and a dualist split

and bodies in Markov's chains

there's foolish talk of a Mafia hit

that her memory loss explains.

Footnote:

| is an ascii character. It has a name.