i belive random events is all patterns and not random, what i think is there's 1ks of different random event patterns that jagex has made or put into the game, so this means that 1-1k patterns get inputed, so some1 could receive pattern 578 or pattern 899 and each pattern contains info on when to realise or when not to reaslise a random event, i belive this is what they have done for everyone would try to look for a pattern when every1 has a different pattern would make everyone confused.