I'm pretty sure that if the Culture discovered a world like that of Brave New World they'd work to shut that society down pretty quickly as they'd be appalled a

I'm pretty sure that if the Culture discovered a world like that of Brave New World they'd work to shut that society down pretty quickly as they'd be appalled at the idea of creating underclasses by intentionally exposing embryos to poisons (alcohol?). The the society of Brave New World would fail as a utopia because of the "What would the Culture think?" test ;-)