meic wrote:therefore an abortion can never be murder.
That is merely the legal ruling in one particular country, not a definition of the word murder.
On the other hand the definition of contraception is for something which must have happened before abortion can even be possible.
So getting semantic squabbles out of the way. Why is it OK at 23 weeks and 6 days but not at 24 weeks and 1 day, when we cant even be that accurate about the age anyway? Only conception and birth are clear cut off points. Yet it is obvious to everybody that there is a continuous development of a living creature from one of those points to the other.
Because 24 weeks is what the law states. Murder is a legal concept and is just one sort of unlawful killing. In any one country it is what is defined by the law in that country.