Matt Ridley writes that the Raellian clone could be reproductive techonlogy's Chernobyl:
Against these benefits, the disaster of one sick child produced by the premature use of reproductive cloning might seem to be a small setback. But public debate does not work that way. It takes benefits for granted and makes a massive fuss of costs. The principal victim of the backlash to Eve will be stem-cell research.
Of course this cuts both ways. Cloning's advocates rarely admit that cloning might not produce great benefits, or that other less troubling avenues of research could produce the same benefits.