having known dozens of friends, family, roommates, coworkers etc both before and after they started them. The two biggest telltale signs -
1. tendency to produce - out of no necessity whatsoever, mind - walls of text. walls of speech will happen too but not everyone rambles.
2. Obnoxiously confident that they're fundamentally correct about whatever position they happen to be holding during a conversation with you. No matter how subjective or inconsequential. Even if they end up changing it an hour later. Challenging them on it gets you more of #1.
1. tendency to produce - out of no necessity whatsoever, mind - walls of text. walls of speech will happen too but not everyone rambles.
2. Obnoxiously confident that they're fundamentally correct about whatever position they happen to be holding during a conversation with you. No matter how subjective or inconsequential. Even if they end up changing it an hour later. Challenging them on it gets you more of #1.