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I have to admit I've never seen Blade Runner. Something about its fans turns me off, frankly. I don't know what it is. Generally Science Fiction just isn't my thing, and Science Fiction in the 1980s has all of the cheese with none of the kitsch of the 60s variety. So I don't know the plot of this book, since I presume that the only people who know the plot of this book know it from the movie.
The book was written by Philip K. Dick, who may one day get a listing here, alongside Jacque Tits. Before that, though, we have the book, whose name is not as run-of-the-mill as 'Blade Runner' (gofor in an abbatoir?) but has the much more interesting name "Do Androids Dream of Electric Sheep?"
I don't know the answer to the question posed. I don't know what the logic is behind it (I connected it with 'counting sheep' but I now realise that that's a gambit for falling asleep and nothing to do with dreams at all). I don't really want to know, because I like the title as a slightly poetic piece of nonsense, like Noam Chomsky's famous 'grammatically-correct-but-meaningles sentence' "Colourless green ideas sleep furiously". That'd be a good name for a book too.