There's a specific silence after launch. Not the silence of people not seeing you. The silence of people who saw you… and decided not to say anything. That silence is data. Most founders treat it like weather. The difference between a community that compounds and one that quietly empties is what you built between their first action and their second. First action is join. Second action is proof they stayed. Most projects never build that window deliberately. They just hope the next post fills it. It doesn't.