Nothing is one of the more intriguing phone names to have landed in the world of tech in recent years. How did such an "unsubstantial" name come to be used for a line of smartphones, earbuds, and headphones? The story is a surprisingly fun one. According to Nothing's co-founder and CEO, Carl Pei, the idea came out of a conversation with his younger sister. While out for a stroll together, Pei told her a couple of company names that he was considering: Stone and Next. "She's Gen Z and she's quite young, and she hated all of my names," Pei said…