> A micromort (from micro- and mortality) is a unit of risk defined as a one-in-a-million chance of death. Ah... so it happens nine times out of ten. > The mi

> A micromort (from micro- and mortality) is a unit of risk defined as a one-in-a-million chance of death. Ah... so it happens nine times out of ten. > The micromort concept was introduced by Ronald A. Howard I was genuinely surprised that not by Terry Pratchett.