Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ripper of a Premise -- Fails in the Execution

I would love to have seen a really good speculative fiction author take PD James' fantastic SF premise and run with it, because this book turns out to be pretty darned dull. I purchased the book based on the premise, and was disappointed.The characters, all of them, are wooden and uninteresting. The world-building ends up being rather pale. There are a few powerfully evocative scenes portraying the social response to the "whimper, not a bang" end-times of the human race, but not enough to keep the book going. And the suspense turns out not to be suspenseful.