Very interesting! Pupils could probably learn while they're sleeping, what a wonderful idea. But maybe our sleep would not be the same then. maybe we would be exhausted when we're getting up instead of being really awake. It might be easier and more comfortable to learn during our sleeping phases, -but will that really train our brains? Will it really make us more intelligent? I suppose there are a lot of padagogical aspekts, the difference between conscious and unconscious learning.
The world of Brave New World does not exist of usual rules of nature anymore. Everything is manipulated, manipulated for stabillity, for convenience.
That's the result of the longing for a better world, an easier and a faster world.
And that's our intention, too isn't it!?