Jon made his wish and waited for the stone to flash. It didn't. That's odd, thought Jon. I wonder why that didn't work?
Jon sat down and thought it out. Every time the stone granted a wish, it would flash. If it didn't flash, that must mean that it hadn't granted the wish, but why?
Suddenly it occured to Jon; perhaps it didn't grant the wish because the conditions necessary for the wish to be in place already existed. But that would mean only one thing: Karyn was already a lesbian! Jon wondered how he could be best friends with Karyn for almost his entire life and not figure out that she was a lesbian. She even had a girlfriend and he hadn't figured out. Why hadn't she said anything? If she came out, why hadn't told him? He had to figure out a way to get the truth from Karyn without her guessing anything.