Yes, I agree, an egg is not human...has no life. Fetus' do have life. By scientific definition, life responds to its surroundings. Eggs do not, but what about sperm? Scientists are still curious is masturbating is considered killing something living because there is evidence to suggest sperm are living (just a thought).
Aliens: mythological, but from my understanding, they are intelligent creatures, can create society just like humans...and even have a hierarchical system...but something bothers me. Let's pretend we met an alien one day...they came to visit. Can we call them human?
1) They have morals
2) don't have morals
3) regardless of 1 and 2--->a female human sleeping with a male alien =/= a baby.
I'm not sure what I am asking, maybe for your thoughts.
So far, I guess genetics plays a role making you human, consciousness to some extent. Morality and the ability to reproduce, ability to think complex things...what about feelings? Sure animals get mad if you annoy them (lions for example), but animals don't care if its grown child dies later in life. If the lion king were to be realistic, the simba's mom would probably not been so 'sad' to have her husband die.
It appears as if we agree in the end but disagree about whether the word human should or should not be used to describe personhood. (http://en.wikipedia.org/wiki/Personhood)
I think it absurd to refer to Homo Sapiens for legal, ethical, sociological, psychological, and other not-strictly-genetic purposes.
I think the ability to reason is a sufficient condition for personhood.
Since Human is usually used to refer to only Homo Sapiens out of all People, I think we should be specific and use personhood when we are talking about personhood.
I apologize for the confusion; there were indeed some unclear phrases in my writing (such as 'must be considered', and the lack of clarification between personhood, humanity, and Homo Sapien-ness).
The original question of whether fetuses should be considered humans refer more to the concept of Personhood (but not exactly; there is still a difference between Personhood and Humanity) than to that of Homo Sapiens. If it refered to Homo Sapiens, there would be nothing to discuss. A fetus has the same DNA as its future, full-grown self (barring extraordinary circumstances and artificial interference); as 'Homo Sapien' is a genetic definition, there is no way to suggest that it is not Homo Sapien.
In order for the discussion to have any meaning, then, the word 'human' in the question must not refer to 'only Homo Sapiens out of all People', as you have suggested, but 'People' in general.
Also to say a human must define themselves as human to be human is incorrect. What if I am mute and have a brain problem...am I not human...in fact let's say the world calls me non human, am I non-human? No, your still human...this is why there is something more...something different we are not seeing that makes humans so unique.
Being mute does not prevent you from defining yourself as a human, or even from communicating your declaring of humanity.
If your brain problem is sufficiently severe, then you may not be a human. For example, there is a medical condition in which additional sets of fully formed organs can develop inside a person's body, but have no capacity to grow into a reasoning being; that collection of organs is not human. There is another medical condition where two twins are merged into one, with only one of them retaining the ability to reason, and the other existing only as a parasitic twin. The parasitic twin is not considered human, and removal of the twin from its host ('killing') is almost universally recommended if medically reasonable.
lares itself human, then it is human, even if his master disagrees (again, by P1).
If you declare yourself human, but every other human disagrees, you are still human (P1).
So, you are saying someone born without the ability to think really isn't human? Like zombies from
World War Z? I agree to some extent. They have the genetic composition of a human, respond to their surroundings, still look human...but as Max Brooks states in his book (p1-3), they lost their human factor...I wonder if fetus' have this 'human factor.'
(I will talk about this also in the abortion topic)