Given that you have 2.63e35 odd possible permutations of 32 books (many of which will not look random when seen numerically), I shouldn't imagine you'll bother with an exhaustive list of possible sort orders ?But, of course given that your original texture looks like a random sort (i.e. no rainbow sequence of colours), whether the indices appear random is irrelevant.

I certainly wasn't suggesting a script in this case, just that the output of a script is easily accessible to feed you a starting random order, which it will be simple to modify with nodes to get other orders, as you're doing.

Yes, affirmative mentions by the node master are quite the temptation for brachycephaly (head swelling)

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