I have been consistently honest about the fact that I base my pro-life views on scientific criteria, not Catholic theology. And I have never claimed to be a Catholic.
Did you even look at this Wikipedia page that I linked earlier? Were you able to find any detail in which I am demonstrably incorrect? Calling me a liar and a leftist does not change the fact that the scientific facts that I have presented are accurate. It does, however make it quite clear that you cannot counter anything I have said factually. It is a typical immature leftist tactic to call people names when they cannot factually support their position--why are you behaving like a leftist? Insult me as you will, you still cannot change the fact that ~150 undifferentiated cells are not a living, feeling human being. Differentiated cells form muscle, lungs, skeleton, liver, kidneys, skin, etc.--where are all of those tissues in a blastocyst? A human being experiences his or her environment through central nervous system processing of impulses conducted through the nerves. Without that capacity to experience the environment, a human being cannot exist.
Let me reiterate: the nervous system does not begin to form until 3 weeks post conception when the neural tube starts to fold; by 5 weeks, there is a definite brain (and it is functional). These events all occur after implantation. Put simply, a woman using contraceptives is not killing anyone because no person exists.
Your criteria for defining a human being are so loose and broad that just about anything is a human being by your definition. I have mentioned several times that I have grown countless millions, maybe billions, of human cells for research. According to your definition, every one of those cells was a person, and I have committed mass murder and crimes against humanity by experimenting on them and then killing them.
In a previous post, I listed several situations that contradict the idea that a thinking, feeling human being springs into existence at the moment of conception. I notice that you provided no explanation of how any of those situations can be reconciled with the belief that a zygote or blastocyst is a complete human being, choosing instead to insult me in a most unchristian manner.
BTW, you might try perusing a real medical journal, like Reproductive Medicine Online. You won't find any articles claiming that blastocysts contain differentiated cells in there, or any of your other unscientific claims. You will find a lot of articles like this one discussing the fact that most blastocysts do not become babies.
The first question on this fact sheet: "When does pregnancy begin?" The answer: "Pregnancy begins when a sperm fertilizes a woman's egg."
The second question: "What happens after the sperm fertilizes the egg?" The answer: "After conception, your baby begins a period of dramatic change known as the embryonic stage."
... as The American Academy of Family Physicians calls it, a baby.
You are the filth that is now running this nation, a leftist, lying, twisting, deceiving any you can with the lies from your father, a murderer from the start. The assertion that you are basing your argument upon science is absolutely a lie and several have shown your lies for what they are. The use of 'undifferentiated', your dismissal of alive embryonic humans as merely clumps of cells ... yeah, you're a lying leftist bilge spittlist who wouldn't know truth if it slapped your ugly face. You are filth and I will not play with you any longer because you are too dishonest, too leftist, too alinskyesque to have an honest discussion. I am just surprised you have been tolerated at this conservative website for this long, you servant of the most low.