Computerised environments intrinsically lack randomness, so a random number generator (RNG) must be used where an unpredictable result is required. In effect, the RNG works on randomly generated data provided to generate a seemingly random number. Since this piece of programming code decides your fate and destiny in WoW in several cases (just like how Fortuna (Lady Luck) decides your fate and destiny in real life), it helps to know a bit about probability!
The golden rule of probability
Probability is that branch of
mathematics that deals with
random phenomena to (among other things) determine how
likely it will act in a certain way. It is important to know that, for truly random phenomena:
Random does not necessarily mean even or fair!