Roundabouts are a British traffic system of indeterminate purpose. They are most certainly set up as death-traps, but death-traps are only a mean to an end, and it is the end that is unknown. It is possible that the roundabout system was set up as a complicated mechanism of artificial selection (a perversion of natural selection). It is also possible that it is just an example of exceedingly dry British Humour. However, this is just speculation, and the true end for which Roundabouts have been established still remains ambiguous.