It is clearly correlated, since the probability of the fetus’ survival increases as it develops, as the evilness of killing does. However I don’t think the probability of becoming a fully functional human is what determines the moral condemnation of killing. To illustrate my intuition, consider:
Babies are clearly not fully functional humans. I doubt we can acknowledge full functionality earlier than in age when humans are capable of reproduction. In Sierra Leone a newborn baby has a 26% chance of dying before age of five, and probably further non-trivial chances of dying until puberty. If the probability argument holds, killing a one year old child in Sierra Leone would be about 30% less evil than killing an adult. Yet many people hold that killing children is actually worse than killing adults.
Imagine a world where after conception the embryo had almost 100% probability of survival until adulthood. Would that mean that killing a morula in such hypothetical world would equal a full-fledged murder?
It is clearly correlated, since the probability of the fetus’ survival increases as it develops, as the evilness of killing does. However I don’t think the probability of becoming a fully functional human is what determines the moral condemnation of killing. To illustrate my intuition, consider:
Babies are clearly not fully functional humans. I doubt we can acknowledge full functionality earlier than in age when humans are capable of reproduction. In Sierra Leone a newborn baby has a 26% chance of dying before age of five, and probably further non-trivial chances of dying until puberty. If the probability argument holds, killing a one year old child in Sierra Leone would be about 30% less evil than killing an adult. Yet many people hold that killing children is actually worse than killing adults.
Imagine a world where after conception the embryo had almost 100% probability of survival until adulthood. Would that mean that killing a morula in such hypothetical world would equal a full-fledged murder?