system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does one make a random number generator?

Maybe more like ELI15, but I've been thinking about this all morning, and it's baffling me.
gpt
The common way is to use an algorithm that makes "random" numbers. However there was no way to generate truly random numbers until recently, where the movements of quantum particles, which are truly random, are recorded as numbers.