←back to thread

A two-person method to simulate die rolls (2023)

(blog.42yeah.is)
76 points Fraterkes | 1 comments | 05 Dec 25 19:32 UTC | HN request time: 0.35s | source
Show context
xg15 ◴[07 Dec 25 21:47 UTC] No.46185507[source]▶
> We can prove that in an ideal situation, the die roll will be fair. Assuming both parties can come up with unbiased random numbers ranging from [0;12)...

Doesn't that assumption remove the entire problem though? I thought the whole reason for the method was that people can't easily think of an unbiased random number.

Or put differently, if that's your starting point, what's stopping you from simply doing (A mod 6) + 1?

replies(4): >>46185554 #>>46185609 #>>46186338 #>>46186472 #
1. torginus ◴[07 Dec 25 21:58 UTC] No.46185609[source]▶
Yeah, the only valuable idea here is the angle-one, which is like a modulo, making the approach a primitive LCG, which is a way of generating pseudorandom numbers from seeds.

I'd say the only unbiased and non crappy method here is to feed the 2 participants' numbers into some sorth of hash function.