While science provides plenty of information about when life begins, Goldberg and many many others take the position that “I don’t know if life begins at conception. I don’t really know what ‘life’ means.” He goes on to make a great argument for the pro-life case for those who start at the same place.
In death penalty cases, “reasonable doubt” goes to the accused because unless we’re certain, we must not risk an innocent’s life. This logic goes out the window when it comes to abortion, unless you are 100% sure that babies only become human beings after the umbilical cord is cut. I don’t see how you can be that sure, which is why I’m pro-life — not because I’m certain, but because I’m not.