This seems like a very useful way to rubberduck ideas that are not yet well formed. I like it! Are there limits to a conversation? The input prompt disappeared

This seems like a very useful way to rubberduck ideas that are not yet well formed. I like it! Are there limits to a conversation? The input prompt disappeared in the middle of an exploration of the utility of rotating tires every 5k miles :) edit: ah I see that there is an upgrade path. if that's why it stopped, a callout would be helpful explaining it.