User blog comment:VeryUnknownFan/Jayden-G's review of Twinning Isn't Everything/@comment-28381748-20140709070947/@comment-24152851-20140711020202

@BatmanTDI, I might just be ignorant in saying so but, with fraternal twins I thought they aren't any more different than just brothers or sisters. In fact I've known fraternal twins who you couldn't even tell were related let alone twins.

Anyway, with the confusion, since it was quite dark everyone identified Amy from Samey based on the way she acted, it would be pretty hard to check for the mole. And no one probably expected that in the first place.