At what precise point does non-Dglas become Dglas? And what happens at this precise point to bring Dglas into being?
Lessee, should I answer you, knowing that you cannot be arsed to bother reading responses you don't like?
Oh, well. Maybe someone else will read it...
That is a point of contention, is it not? Certainly parents have an idea of a person when caring for their baby, whether that person is a full-fledged self-aware entity (even if we could properly define such a thing) or not. All we have are rough benchmarks, plumjam. That would be part of the social construction of self of the parents, I suspect, and a socially negotiated understanding of what it is to be a person.
It probably becomes appropriate to speak of dglas as dglas at the point where it can be socially verified (such as is possible) that a self-aware entity has developed with that understanding of self. Many societies, including our own,
promote non-self aware entities as persons for the purposes of protecting the lives of potential contributors to our society (even if just as a workforce grunt). This may be mostly a function of biological instinct, social convention and/or a matter of the hard practicality of the helplessness of newborns. In deference to the parental instinct to protect and nurture their children, social conventions posit the identity of a person before self-awareness actually exists.
What I am saying is that identity is a social construct. Ideas, identities, so-called "non-material concepts" and theoretical frameworks exist in a social context, which means that their effects are material. And they need not have supernatural elements included. These ideas of things are material (in that they reflect in our behaviour and the development of our physical realm), but one must be careful to avoid confusing the idea of a thing with the thing itself. It is perfectly possible to have an idea of a thing that simply does not exist. Unicorns, say, or ....
Assuming you can get a rough agreement on what the God-concept means (if anything), the god-concept is verifiable in the the bahaviours supervening upon it can be measured. This does not indicate the existence of God other than as an idea, however.
"What happens at the precise moment to bring dglas into being?"
Why are you assuming a sharp, instantaneous distinction between dglas and not-dglas? I would tentatively posit that it becomes socially verified that there is a self-aware entity with the label "dglas," but I see no "Eureka" moment where, POP! dglas suddenly sprang into being. We posit such Eureka moments as a matter of political convenience or as arguments to justify this or that social policy in the face of competing, negotiated values. Instead of seeing it as a POP! moment, one might be better served to see it as a gradual process. Actually, it seems that we, as a matter of convention, assume personhood until personhood is disproven, but we need not necessarily do so.
Hidden in your question is the assumption that there is a single moment of causation that turned that lump of tissues into dglas. Why are you assuming this?