Jujutsu: A Next Generation Replacement for Git

why does Git need to be replaced?

This. It's not like we are looking for something slightly better than git in some opinionated way. There's plenty better than git. Mercurial is better than git and as old as git. Git won. Everybody uses git. Everyone who knows, how to use git, is mostly comfortable using git. At this stage we either need something ground-breaking (and I don't quite imagine what this cold be in the context of VCS - even truly semantic conflict resolution barely cuts it, while simultaneously being pure unattainable magic), or I don't think this is gonna float. I don't need it. Who needs it?

It's a relatively easy thing to adopt something you don't need, when you are the only person involved. But VCS is pretty much in the same category as instant messaging and social network platforms are. In a sense, maybe it is a social network platform. I don't see it happening and I highly doubt I would want it to happed, even if I knew this jj stuff better.

Git won because GitHub turned the whole contribution model into a resume-making social media game. The first generation on GitHub pressured the second one into using it at a time when the DVCS scene was still nascent (and git's many flaws, more excusable), and the second one, now turned into a critical mass, made it acceptable for the next to just cargo cult a few commands instead of learning their VCS, because that was the bare minimum to _partake in the game_, and an acceptable trade-off to deal with a now objectively user-hostile and inferior tool.

The nice (and quite unique) thing about jj is that it takes all the good cues from systems which kept improving (and in particular, from mercurial), and slaps them onto git without requiring a storage model change, practically offering the social "perks" of GitHub (by being fully compatible with it), with no-compromise. And to be honest, at this point, there isn't much reason for a new comer to learn git rather than jj, and that's a wonderful news in my book.

> isn't much reason for a new comer to learn git rather than jj

The reason would be that jj uses git as a backend, and all your coworkers use git, and the whole world uses git, so using jj while not knowing git is like being "html-programmer" that doesn't know what RAM is. Surely one can live like that, but I wouldn't want to work with him.

On other hand, what is the reason to learn jj rather than git? What actual problem it solves?