Thread:RABNerd VP/@comment-44402876-20200711182723/@comment-44402876-20200711193033

It depends because Laurel from Earth-2 was never really Sara's sister. These paradoxal cases depend on the perspective imho, but in most cases it's not incest.

Let's do a study case of Owlbat. They don't share the same DNA, check. They weren't raised together, check. One of Bru's parents didn't get married to one of Tom's parents, check. Theorically it's not incest, and the fact Prime Earth *never* had a Thomas Jr. makes it totally not incest for Bruce.

Now let's take this to a more down to Earth perspective that will help us look at Thomas' side. If you had a sister, and she died, and several years later you met a lookalike that strongly resembles her (click for an idea of what I'm talking about)  and that - for irony of fate - is crushing hard on you. Would it be incest? Or would it be just a personal issue, like, just an internal conflict that's totally up to you?