But at that very first moment beings the process of development. I know everyone has different opinions, and science has tried to play a part in it all and make up random stages where they consider the baby to be alive. Science should stay out of things they don't know. Anyways, the very first moment is when the process of development begins. So from that point, it really isn't any different than a 3 year old baby that is still developing. We, as humans, just create in our minds that it is different because we can actually see and sense the baby.