Analysis of information sources in references of the Wikipedia article "Κατανομή Πουασσόν" in Greek language version.
(p.5) The law of rare events states that the total number of events will follow, approximately, the Poisson distribution if an event may occur in any of a large number of trials but the probability of occurrence in any given trial is small.
Within a large area of London, the bombs weren’t being targeted. They rained down at random in a devastating, city-wide game of Russian roulette.