I suspect that we have one of two possibilities here: either you really do not know embryology, or you do know and deceitfully want to define things differently from the way the SCIENCE of Embryology defines things. That second methodology is typical of progressives who try to fashion reality to fit their demonic lusts for exploiting the earliest aged humans.
The blastocyst HAS TO HAVE DIFFERENTIATED ELSE THE CELLS TASKED WITH IMPLANTATION WOULD NOT BE, AS DIFFERENTIATED FROM THE CELLS WHEREIN THE BODY FOR LIFE IN THE AIR WORLD WILL BE BUILT. Even in the morulla stage, differentiation is occurring.
In either case, your assertion as I have quoted it is wrong. If you don't realize why it is wrong, you could study to show thyself approved, or if you do know it is wrong, you are indeed just a common rat liar.
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.