Merging Device: By Age or Gender?

"Should I merge them by age or by gender?" Jon asked Karyn. "Merge? Jon, what the fuck are you talking about?" Zoe asked. "Yeah, what are you talking about?" Joseph asked too, but also gave Zoe a demeaning look. He didn't approve of Jon's Goth sister. She definitely should watch her language, especially around people like his little sister. "Just do what you want, Jon," Karyn said. "I don't care." Jon shrugged, then aimed the device at his sister Zoe.