Parasomnium
I see a problem with it, though. It's this: as medical science progresses, the point at which assisted premature birth is medically feasible will move back further and further until a point is reached where it is medically feasible to fertilize an egg outside the womb and keep it there, in an artificial incubator. It may become possible to let a fertilized egg grow into a baby without the need for it ever to be born. In that case, the fertilized egg would constitute a viable human being to which the definition applies.
I agree if such a situation were to occur , but as for now I would still agree with RAZD.
There is no better love between 2 people than mutual respect for each other