For example, how does an infinitely randomized world like Minecraft manage to generate me an identical world to my friend with just a handful of numbers that they send me?
In: Technology
Random number generation isn’t truly random. It uses a “seed” to start the random generator. Each seed will have its own unique output
If subsequent generation is deterministic (meaning it generates things in the same order), then the random numbers will come out the same and result in the same outcome
To get “random”, the initial seed uses something such as current time, random static picked up by a microphone, etc
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