Comment Re:Um, 301 and 302 (Score 1) 72
Redirects only work when the hosting party makes them work. Which means they usually don't work.
This proposal is not about the simply a way of expressing what page the source document creator intended you to see. If that version is no longer available from the targeted host (and it may have simply changed) your browser can offer to pull up the expected version from the archive. You can kind of do this manually today. As long as the source page is static, you can generally guess that the date of the target page is the same as the creation date of the source. However, it is PITA and many pages are static.