It's funny he talks about "rolling dice." Is simulating dice rolls fairly common in computer RPGs?
Board games use dice because it's a fast way to approximate uniform or normally-distributed values, but the computer can give you a real number right away that you can distribute however you want.
(And I'm sure this is way too tiny to impact anything, but generating multiple pseudo-random numbers to determine the outcome of a single event reduces the "randomness" of the simulation.)
In computer lingo, the words "simulating dice rolls" equal the words "asking the computer to pick a pseudo-random number." They apply to any and all types of computer programming if the programmer personally likes the metaphor of "dice."
Also, I don't believe I understand your suggestion about computers giving you "a real number right away that you can distribute however you want," implying in your last line that there was some sort of contrary issue going on. If the programmer wants a distribution based on multiple pseudo-random numbers, then isn't that the end of the question?
--Rexfelum
Edited P.S.: Well, yeah, alright, I can see that someone might create a weighted sampling distribution that looks like multiple die rolls, and then sample from it once and only once. However, I believe that the increased complexity of deriving a new sampling distribution for every new combination of "die rolls" outweighs its usefulness, in terms of ease of understanding, ease of translating to different uses in the code, and risk of errors.