This is also good to hear! I'm not sure whether I'd call it a "footgun" per se--that's really an empirical question about how Datomic's users understand its mod

This is also good to hear! I'm not sure whether I'd call it a "footgun" per se--that's really an empirical question about how Datomic's users understand its model. I can say that as someone with some database experience and a few weeks of reading the Datomic docs, this issue actually "broke" several of the tests I wrote for Datomic. It was especially tricky because the transactions mostly worked as expected, but would occasionally "lose updates" or cause updates intended for one entity to wind up assigned to another. Things looked fine in my manual testing, but when I ran the full test suite Elle kept catching what looked like serious Serializability violations. Took me quite a while to figure out I was holding the database wrong!