Apologies, I see why that wording was confusing. A more specific phrasing would be "the Haskell code just caches the results from the linear search in an array

Apologies, I see why that wording was confusing. A more specific phrasing would be "the Haskell code just caches the results from the linear search in an array for each possible input." The Haskell code does not cache the RNG output itself. I've asked Llogiq to update the wording.