Having tried to implement a multiplayer rich text, we settled on last-edit win to simplify the structure.

OT/CRDT is really hard to implement.

My takeaways from experimenting with CRDTs were:

- In many cases, CRDTs didn’t improve upon last-write-wins, i.e. a CRDT update followed by another user’s CRDT update 10 seconds later is the same as last-write-wins

- Often the challenge was less technical, and centered around what a conflicted state means in the absence of a human discussion, i.e. how would you resolve a git merge conflict without human intervention, or if two people reschedule the meeting simultaneously one of them is likely to miss it unless they talk it out

Matt's blog is a great resource for getting up to speed on CRDTs etc.. especially when working outside the domain of text editing!