I would argue that immutability is a separate service. You can change a web page all you want that someone has linked to. Immutability is provided by services l

I would argue that immutability is a separate service. You can change a web page all you want that someone has linked to. Immutability is provided by services like the Internet Archive. It should be decoupled. YouTube's immutability had been very troublesome to me. For example, we create video for a research paper demo. Then we want to enhance it, add some more content but now we have to create entirely new link. But the old link is popular in social media and therefore people keep watching old version. For each new revision, link is outdated. How many times you have to keep telling people to update their bookmarks?