Randomness is a conception of perfectly legitimate, if somewhat redundant. Randomness also plays an important role in scientific inference. A random sequence of events, symbols or steps has no order and does not follow an intelligible pattern or combination. Individual random events are by definition unpredictable, but in many cases the frequency of different outcomes over a large number of events is predictable. It is a method of selecting items from a population where the probability of choosing a specific item is the proportion of those items in the population.