- That would produce a real, and different, person/self that otherwise, never had a chance. In other words, those two combinations of sperm cell and ovum do represent two real persons/selves that currently don't have a chance of ever existing. No one will ever know those 'potential' selves.
A sperm and ovum combining is a
necessary but not
sufficient condition for a person/self arising.
Your self is not like your eye colour, something that boils down to simple genetics. It is an ongoing process arising from a whole range of conditions, including your genetics and your experiences.
You seem to think that a sperm cell combining with an ovum is, in itself, both necessary and sufficient to give rise to (and represents, whatever that means) a single unique sense of self and that nothing else is relevant.
A sperm cell and an ovum combining might never give rise to a person with a sense of self at all (in fact, I think that most don't) and a given sperm cell combining with a given ovum can give rise to person whose sense of self can be infinitely varied depending on their experiences, which are dependent on an unimaginably huge number of factors that we don't need to go into the details of.
But you seem to think that any unique sequence of genes, in and of itself, 'represents' (I'm putting that in quote marks because I'm really not sure what you mean by it) a single unique sense of self. It doesn't work like that. How could you even think it does? Have you not been listening to anything anybody has said about the sense of self and have you not learned anything from what you've read in this thread?
Moreover, you seem hellbent on debating these tangential minutiae while ignoring the problems with the meat of your argument. What has any of this got to to with anything? It's almost like you're deliberately trying to bore your opponents to death by arguing these pointless issues. None of this is helping your case at all.