> It’s curious that over those projections, we then build event stores for CQRS/ES systems with their own projections mediated by application code. That's real

> It’s curious that over those projections, we then build event stores for CQRS/ES systems with their own projections mediated by application code. That's really logical. From the view of the application there is no transaction log, only a table. It's an implementation detail of the database. The application wants similar guarantees a log can provide, so they build their own.