What is random? If we could define it, it wouldn’t be random;
It is impossible to produce an arbitrarily long string of random digits and prove it is random. Strangely, it is also very difficult for humans to produce a string of random digits, and computer programs can be written which, on average, actually predict some of the digits humans will write down based on previous ones.
According to physcists now we are able to touch genuine randomness right at the source; quantum mechanics