"Sure it makes sense, if she's now an android," said Jon.
"What!?" cried Karyn. "The technology doesn't exist!"
"Maybe it does after the stone changed reality," suggested Jon. "Or maybe she's not an android. Maybe she wasn't born as 'Sarah McMillan'. Maybe something very simple happened ... like she was born with a different first name. Maybe she always had a different legal first name, so the stone did nothing."
"But we've always known her as Sarah," objected Karyn.
"But we haven't seen her birth certificate," countered Jon. "It could have some totally different first name. Sarah could just be her middle name. Or it was her legal first name but now it's something else."
"If she wasn't born as Sarah McMillan, maybe it was her last name that changed," suggested Karyn.
"Yeah, adopted or something," said Jon. "Born to some other mother and given a different name at birth. Only trouble is, if that were the case, Sarah would look a little different with her new genes. Doesn't seem that she got any new genes. She looks exactly the same as she did before the wish."
Karyn looked at a photo of a couple who were presumably the McMillans. "Maybe it was her parents that changed."
"Hard to say," said Jon. "I don't know what they looked like before. Still, I doubt they changed on a genetic level, because Sarah should have been affected. It's highly unlikely that her appearance - even on a surface level, not counting things like the DNA for her internal organs, or her recessive traits - would be identical if she wasn't born to the same parents. So I'm guessing that they didn't physically change, which leaves open another possibility. Sarah's father isn't a McMillan anymore."
"But you just said you didn't think he changed."
"Not on a genetic level. A change of a name would still be possible."
"But why?" asked Karyn. "Adoption?"
"Maybe Mr. McMillan's parents died in this new reality, and he was raised by somebody else. He ended up marrying the same woman as in the old reality and gave birth to the same daughter - Sarah, but with his 'new' last name, the only name he's known for most of his life."
Karyn raised her fingers one by one. "Hmmm ... android ... a name other than Sarah on her birth certificate ... not being a McMillan anymore, but having her dad's adoptive parents' last name instead ... that's three possibilities. Could be others. She could have been born a boy and raised as a girl. Another variant of the born-as-a-McMillan-but-not-as-Sarah theory. How do we figure out which one is right?"
"The android one is going to be tough," said Jon. "It's not like we have the right to try to disassemble her, no matter how awful she's been to us. I guess we could wish to see her birth certificate. If she doesn't have one ..."
"Or just ask the stone ... hey!" Karyn turned away from Jon. "That looks like a bill lying around. Maybe we won't need the stone after all. Let's see if it's addressed to the McMillans, or to someone else."
"Okay." Jon walked with Karyn toward the bill. He picked it up and saw ...
