Most stories are not just a single news item that is relevant immediately after some event and then less relevant over time. Many stories evolve and new inform

Most stories are not just a single news item that is relevant immediately after some event and then less relevant over time. Many stories evolve and new information is added. The Airbnb stories lately are a perfect example. If you're busy enough to occasionally miss a day (or even a half day) of HN, you might not realize that something has already been posted. I really think this is a non issue. Occasionally when there are dupes, I ignore them if I found them boring the last time, or read/comment again if they were fun last time.