I think what NEWT is saying here is that if you fertilise a woman’s egg and place it in a freezer for 6 months , it isn’t a human life until it is implanted. Conception would come when it is implanted and not when it went in the freezer.
Not sure I don’t agree with him.
Nitpicking this is far too complicated an area for me, and I don’t know what the Catholic theologians have to say about it. Is it a human life when the egg is fertilised or when the fertilised egg is planted. There damn sure will not be life without implantation.
Newt’s view also leaves the door conveniently open for the use of embryonic stem cells.
Neither will there be without fertilization. Which, of course, comes before implantation.