Rust's language ergonomics initiative
Can't trust such ideas. Especially when I read about "conventions are good". No, "conventions" is the plague and that example of mod.rs is an example of crappy thing in Rust, difficult to gasp by a newbie. Exactly because it's just "convention". Hope they will not destroy Rust by adding more "conventions" or by switching to " implicity over explicity" camp of noobs.