Explicit, for me, means that I determine in the model the `published_at` is a DateTime. Not merely in the DB, and never magically derived from the name (_at=dat

Explicit, for me, means that I determine in the model the `published_at` is a DateTime. Not merely in the DB, and never magically derived from the name (_at=datetime, _on=date). But explicitely defined. E.g. `attribute(:published_at, DateTime, default: ->{DateTime.now})` Rails does not do this entirely "magic", though: it derives it from the database. And true: you can follow the logic along: the magic can be researched easily. But still: I really prefer a system in which I write all that boilerplace (my IDE/vim can do this for me really well) instead of relying on convention, heuristics and magic.