Jon reached to the doorknob to the room where he left Karyn when he suddenly had a great idea. He could eliminate the possibility of having been transported by wishing.
"I wish I knew where I was." He whispered clutching the stone. The familiar tingle came.
It was as if he suddenly remembered something. He realised two things. One, he was in fact at Karyn's house. He even knew the map coordinates. Second, he realised that he had just made the most useless wish ever due to lack of specification.
He entered the room, feeling stupid. He noticed Karyn's hair was still blond, he finally realised that he couldn't be in another dimension. For one that dimension would have to have had all the same wishes. Second there should be two Jon's, unless he displaced the other Jon. Lastly, why would he change if he was just moved.
What if everything was a dream. He had a plan to test that. He would make a wish. A wish that was easily identifiable and without risk. His fist clutched the stone more tightly.
Karyn's eyes went wide when she noticed his fist. "Jon, don't. Think it over!"
