That's less true for communities that are focused on things that change over time. For example, TV show subreddits have plenty to talk about each time a new epi

That's less true for communities that are focused on things that change over time. For example, TV show subreddits have plenty to talk about each time a new episode is released. Or maybe a better example, the Java subreddit has its share of "how do I dive into X" questions but also plenty of discussions about new and upcoming language changes.