Jane is pregnant, but...

"Oh my god." Jane said. "It can't be!" "It can," said Jon, "but... Wait a minute. Why can't the stone change someone who's pregnant? You can wish someone dead. You can even wipe someone out of existence. Why can't you wish away a pregnancy? Mom, tell me exactly what the stone said." "I don't remember," she said. "It just sent some ideas into my head. It had something to do with pregnancy, I know that." "I wish," said Jon, "that I know why that wish didn't work, in a lot more detail." Jon clutched her ears and a second later said "Mom, the stone tries to avoid accidents. If you tell it to kill someone, it will. But if you wish for a hundred thousand dollars, it won't kill Grandma and give you the insurance money. It's a **nice** stone--it figures out another way. Pregnancy is like that--it'll stop a pregnancy if you say so, but if you don't, it tries to find another way." "Another way? But it didn't do anything." "It figured out a way without doing anything. You wished my body was male. The stone took that to mean that my original body was male in the past, which is true." "So all I have to do," said Jane, "is wish you to be male, but say what I want to happen to the pregnancy?" "Pretty much, but you might want to do something about your pregnancy too." "Okay, Jon, then I wish...."