In Never Let Me Go, why don't the "donors" in the story just escape? Why don't they just refuse to sacrifice themselves by giving away their organs?
The clones don't think of escaping for the simple reason that this is not really a novel about clones or bioethics. The point is that we just do. All of us. Most of us are not even aware that of the inevitability of our fate. We just go on though we know that there is only one end. To read the novel as sci fi is to misread. The entire premise is a symbolic one.
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Does this very question also serve as a critique of religion? By this I mean are Kathy and her freinds reminiscent of those who are indoctrinated into a certain religion at an early age and consequently lose the ability to challenge what they are instructed to accept? I think this adds to the overall layering effect of the novel. It is not simply about cloning: it is about the psychology of love, friendship and sacrifice.