Pro-life atheists

[Heywood]

A skin cell is not a contiguous living system. It is a component of a contiguous living system.

As is a fetus until it's born. Afterwards, it certainly becomes one. I will grant that it technically becomes one at viability.

An embryo created in a petri dish, is that not a contiguous living system?

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Yes, they are complete living systems.

And they can survive on their own. :o

The ability "to survive on its own" is not in the definition of an organism. You cannot survive on your own. If all the beneficial bacteria in your gut were eradicated, you would die. Therefore you are not a human being because you cannot survive, "on your own".....right?