That body also so happens to be occupying another person’s body, taking their bodily resources, and imposing a heightened health risk. The mother can expel that body at any point she wishes.
I disagree. Biologically, life indisputably starts as soon as two gametes fuse to form a zygote. This isn’t a philosophical matter. A new, living organism now exists. However, the law allows for taking another life in many scenarios. Abortion is one.
Assume a woman is told by her doctor that if she carries the baby to term there is a 50% chance that she will die but only a 10% of the baby dying. If she has an abortion, there is a 0.5% chance she will die (I made that number up for the point of the calculation).
There are two choices; abort or not abort.
Using expected values…
Abort results in the death of 1.005 human beings.
Carry to term results in the death of 0.6 human beings.
I assume our goal is to minimize the loss of human life, correct?
This assumes we assign the same value to the fetus as we do the mother.
The fact that you would make exceptions for the life of the mother tells us that you do not assign the same values to the mother and fetus. You value the fetus less. Why?
In such a case there is a clear threat to the life of the mother so there’s no problem with the justification.
To put this in very understandable terms, just because someone is robbing you at knife or gun point does not mean they absolutely intend to kill you but there’s a very real possibility they will, in such a case shooting them in self defense is still perfectly justifiable.