I read it as “there exists a event schema and some database table for which they can be co-constructed”, not “every database table can be turned into a stream o

I read it as “there exists a event schema and some database table for which they can be co-constructed”, not “every database table can be turned into a stream of events.” I don’t have a proof, but For things like state transitions, I’ve often solved this with a <new_state>_at column. Seeing that field populated would indicate a second event need be emitted. (Assumes no cycles in the state machine.) Often that table is not the one you have, even if (perhaps especially if) you emitted events for every update — seems like some entropy-like force pushes the universe toward emitting details in events that aren’t reflected in the table records, over a long enough timeline.