A benefit of SNAFU is that the `From` trait is implemented against the internal-by-default context selectors. Since enum variants are public if the enum is, SNA

A benefit of SNAFU is that the `From` trait is implemented against the internal-by-default context selectors. Since enum variants are public if the enum is, SNAFU also offers a way to wrap an opaque newtype around the internal error, allowing the implementor to choose exactly what public API their error exposes.