Karyn's Brilliant Idea

With all the people Sarah changed, *someone* must have gone outside the wish limits and I missed changing them back. Any ideas?" Jon asked. "I can't think of anything," said Karyn. "No, wait. How about you walk around the outskirts of town and continually make the same wish over and over. Then you can cover areas that you couldn't if you just did it right here." Jon stared at her. "When *exactly* am I suppose to do all of this? Karyn, that could take forever. Do you know how big this town is?" Although, it *did* seem like a plausible idea. "Hey, don't get so offensive," Karyn said. "You asked me for ideas. Remember?"