String::from("Ferris") returns a String object (https://doc.rust-lang.org/std/string/struct.String.html https://doc.rust-lang.org/std/string/struct.String.html)

String::from("Ferris") returns a String object (https://doc.rust-lang.org/std/string/struct.String.html https://doc.rust-lang.org/std/string/struct.String.html) whereas "Ferris" on its own is a primative "str" (https://doc.rust-lang.org/std/primitive.str.html https://doc.rust-lang.org/std/primitive.str.html)