Quote Originally Posted by Andres View Post
To determine whether a "clump of cells" is human life or not, is not exact science.
few things are.

abortion is a philosophical question for most people, not a solely scientific judgment. the philosophical question of import is:

when does the fetus become a person deserving of personal rights that supersede the mother's rights of personal determination over her own life and body? science can be used to help you come to an answer to that question, but it can never be an 'exact science'.