A number of programming languages have no built-in way to generate random numbers. How are we able to include these languages in a challenge requiring random output?
The unfortunate fact is that not every language can answer every challenge. I can't answer most, if not all, file-system challenges using Jelly, as it doesn't have the capacity to read files. And that's fine. If a language is unable to produce a random number in a valid way according to our rules, then it cannot compete in a random challenge.