Thanks for the great explanation. If I was stuck on what was happening with the MDs but I think I get it now. I also went back to your previous explanation of projections to refresh my memory. So it’s the ability to use the same raw material (streams of events going back in time) to build multiple updatable projections in full confidence that the underlying historic data is reliable, with at the same time (if the projection is specified correctly) the ability to query data very efficiently.
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