It's a short story about the "Monte Carlo project" to randomly generate viruses. A pertinent quote:
The theory also included the best containment facilites in the world, and five hundred and twenty people all sticking scrupulously to official procedure, day after day, month after month, without a moment of carelessness, laziness or forgetfulness. Apparently, nobody bothered to compute the probability of that.
Especially his "Cabinet of mathematical curiosities".
"The music of the primes", by Marcus de Sautoy, is also worth reading.
"Bond reflected that good Americans were fine people and that most of them seemed to come from Texas." - Ian Fleming, "Casino Royale"