How am I asserting by asking you to prove your assertion?
Haven't you been constantly asserting that the resultant organism at fertilization is a human being?
Medical science explains that with fertilization a new and distinct human being starts to exist. It can't be any other kind of being because its parents are human beings.
Lets take this bit by bit. Using the phrase medical science is obviously an appeal to authority and more is obviously needed to defend this view. Are you claiming that there's a consensus among medical scientists that your statement is correct? What are the specific characteristics of a "human being" that allows for this consensus that a newly fertilized embryo is indeed a "human being"? Do you understand where I'm coming from? You keep asserting that science says this and science says that, but ultimately it has very little substance to it. If you wish to argue from this point, you need to bring more to the table.
For example, in your previous post you gave this as evidence
Human life begins at fertilization, the process during which a male gamete or sperm (spermatozoo developmentn) unites with a female gamete or oocyte (ovum) to form a single cell called a zygote. This highly specialized, totipotent cell marked the beginning of each of us as a unique individual.” “A zygote is the beginning of a new human being (i.e., an embryo).
What does this tell me? It says that a zygote is a highly specialized, totipotent cell which is formed from the male and female gametes. The writer then asserts that this zygote is the beginning of a new human being.
What is this assertion based off? Where is the reasoning? What is so specific about a specialized totipotent cell that allows it to be called a human life?
It doesn't tell me anything! It's just opinionated drivel.
You've asserted so much but you have given no scientific or factual evidence that this is the case. You seem to think that just because you can state something without facts to support your claim that this then makes it so.
That's because my argument is philosophical reasoning. You're trying to derail it by abusing scientific definitions. But as we found out as toddlers, square blocks do not fit into star-shaped holes.
I have given medical quotes from embryological and medical texts that this is indeed the case, the fact, that something new, living and human separate from the woman begins to grow. Until you can give factual or logical evidence to the contrary your case is non-existence as anything other than wishful thinking.
Did you even read what your quotes said?
Steven Ertelt says that because the NIH's definition of "fertilization" states that the development of a new individual is initiated (which is perfectly true), this means that life begins at fertilization. This is his own interpretation. Clearly, the initiation of the development of a new individual does not mean that the initiation is life itself. Moreover neither Ertelt or LifeNews are reputable scientific sources and both are heavily biased towards pro-life views.
Now, I've already written about the usefulness of your second quote so if you put it all together, what have you actually proven? Basically nothing right? There's little scientific basis beyond the fundamental facts upon the creation of a zygote. It's just assertions upon assertions.
Not only have I given you factual evidence that can be seen under a microscope, but I have also given you logical arguments that when something new begins to grow then that something is human and can be nothing but human if its donors are human.
And seeds are trees? Is your house made of seeds? When I eat seeds am I also eating trees?
What do you mean by human?
You are trying to blur or cloak and obscure what the thing that comes from fertilization is as not quite human by your labeling.
"Developing stage?"
What is developing? It is a human being that is developing.
No, it's a prenatal form of homo sapiens. If you mix the terms, you are going to further confuse yourself.
All human beings in existence today are classed by this term - Homo Sapien. How does that make it any less a human being?
All human beings are homo sapiens. However not all homo sapiens are human beings.