Changing Ancestry

"Then, how come when you wished the branch to be red, it didn't work?" Karyn asked. Jon wished again for knowledge. Then he said, "Because everyone who lived in this town for a long time traces their ancestry back to Incans. Which means that everyone here has limits when using the wishing stone, except for people without Incan ancestry." Jon looked down at the stone in his hand and got an idea. "I know a way around the limitations." "Really? What?" Karyn asked. "I wish I didn't have Incan ancestry. That way I can use the stone without li ..." The stone glowed and Jon disappeared. Karyn picked up the stone and wished to know what happened. Her eyes went wide when she realized. Since Jon didn't have Incan ancestry, he could no longer exist ...