Is It Okay to Kill?

"To do philosophy, all you need to do is have a commitment to think hard about things," he says. "The dangers I'm introducing is that we're shifting the conversation from when is it okay to kill versus how should we evaluate tragedy." Pro-lifers are faced with this particular thought experiment as if it's a slam dunk that the embryos don't have moral value; many people will perk up at that and lean towards the pregnant women because they believe there are more human beings involved in that situation.