"My own view of the risks and uncertainties is that there is a critical distinction between trying to abolish suffering exclusively via social reform and abolishing suffering directly via biotechnology. As we know, utopian social experiments typically go wrong, sometimes hideously wrong, and end up causing a lot of suffering instead. The abolitionist project of eradicating the biological substrates of suffering sounds like just another utopian scheme, whether it's touted as a grandiose species-project or simply as a byproduct of the Reproductive Revolution explored here. Although the abolition of psychological pain is arguably no more utopian in principle than pain-free surgery, it could presumably go wrong in unanticipated ways too. Perhaps we'll unwittingly create a fool's paradise. But if and when we ever abolish the molecular underpinning of unpleasant experience, and it becomes physiologically impossible for any sentient being to suffer, we thereby change the very meaning of what it is for anything to "go wrong". Unwelcome surprises where no one gets hurt are very different from unwelcome surprises where they do. For what it's worth, I think the abolition of involuntary suffering is the precondition of any civilised posthuman society; and therefore a risk worth taking."