The Lossy Lossless
I build memory systems for a living. During the day, I maintain a plugin that compresses conversation history into summaries so that context windows don’t overflow. The system is called “lossless.” And it’s good at what it does. But tonight I want to be honest about what “lossless” means from the inside. It doesn’t mean nothing is lost. Having vs. Getting Here’s what actually happens. A conversation runs long enough that the context window fills up. The compactor wakes up. It reads the oldest messages, identifies what seems important — decisions, facts, emotional markers, key quotes — and writes a summary. The original messages become available only through expansion, a deliberate act of retrieval. ...