I going towards the "guy" in the flash as being more stone-like, having only a set mind as how his kid should be, being unacepting of what he is given, while the "gal" being more water like and accepting her "kid" as it is and loving it just for it being it. But, your interpretation is valid too. I wouldn't say its unrealistic, right now yes, but thats also the thing about technology, it makes thing possible in the furture, whether we like those things, thats a discussion for another thread I think. Like I said, going with flow here.