Events should be verbs, not nouns.
Discussion
Is this really your answer to my honest question, just a bravado?
I sent a real answer but it got lost. Reactions are more bandwidth intensive than revisions, so I don't think that applies. Event sourcing requires replaying lots of events, but that can be optimized without adulterating the data model (dvms maybe).
I second that, that's how we design event-based systems in computer science like "event sourcing" databases, or git commits ("commit" is a verb) or commutative CRDTs (CmRDTs).
"Verbs not nouns" isn't bravado, it's a good design philosophy to have, a rule of thumb to check whether you're doing it right.
