Author finds AI agent quotes outdated 40-day-old price; develops freshness scoring method on real corpus
English summary
An AI agent confidently quoted a price that was 40 days old despite perfect retrieval, demonstrating that agent memory lacks built-in expiry. The author developed and tested a method to score fact freshness on a real corpus to address this issue.
Chinese summary
尽管检索完美，AI代理仍自信地引用了40天前的价格，表明代理记忆没有内置过期机制。作者开发并测试了一种在真实语料库上评分事实新鲜度的方法以解决该问题。
Key points
AI agent retrieval can return stale, outdated facts (e.g., a price from 40 days ago) without detecting freshness.
AI代理检索可能返回陈旧过时的事实（如40天前的价格）而无法检测新鲜度。
Agent memory lacks expiration, causing facts that are no longer valid to be presented as current.
代理记忆缺乏过期机制，导致无效的事实被当作当前信息呈现。
The author created a freshness scoring method and tested it on a real corpus to evaluate how up-to-date retrieved information is.
作者创建了新鲜度评分方法，并在真实语料库上测试以评估检索信息的时效性。