That seems like a pretty good idea to me; would make the last-modified response header unnecessary. I'm guessing it's not done this way because of synchronizat

That seems like a pretty good idea to me; would make the last-modified response header unnecessary. I'm guessing it's not done this way because of synchronization issues? (e.g., if someone has their computer's clock set to the year 2025, they can never refresh on servers that use the header)