It's funny. I've always had the instinct (to a fault) to make every data model include a log. E.g. if I'm making a Facesmash/Elo app, to store the latest score

It's funny. I've always had the instinct (to a fault) to make every data model include a log. E.g. if I'm making a Facesmash/Elo app, to store the latest score and the history of matches. Because who knows what kind of time-series analytics I might want to do one day, it feels overly destructive to just erase old scores. That quickly gets unwieldy and I discard that first instinct. But now people are doing it for real!