The blinking cursor of a remote user becomes meaningless. Instead, the document resembles a version-controlled historical saga. Edits don’t appear live; they appear as "incoming light-cone updates." You might wake up to find that a paragraph you wrote last week has been annotated by a user 4.3 light-hours away—their comments arriving not as interruptions, but as historical artifacts.
The "Suggesting" mode becomes paramount. You never directly edit a distant collaborator’s text. Instead, you leave "stellar suggestions" —proposed changes that travel alongside the document, waiting for the originator’s light-speed veto. Entire scientific papers might be written as nested trees of suggestions, with Martian and Belt-based branches resolving only when their light cones finally intersect. interstellar google docs
Google Docs uses Operational Transform (OT) to merge simultaneous edits. Interstellar OT would need predictive conflict resolution. If you delete a sentence that a distant collaborator is editing (unknowingly, because their version of the doc is three hours old), the system can't just "merge." It would generate a causality log—a blockchain-like record of who changed what, in which causal order, regardless of arrival time. The blinking cursor of a remote user becomes meaningless