Dual WIshes

The next morning Jon had an idea. He called Karyn over and when Karyn went up the stairs to his room he pulled out the stone. "I got an idea Karyn, how about we both hold the stone and we both wish for a wish for one of us at the same time." "interesting" Karyn said, "but what if they conflict?" "Reality will sort it out" Jon said "besides that is part of the fun. Now who goes first."