Q. When I entered an incorrect password for your website, I received this message: “Invalid Log In.” Shouldn’t “log in” be “login” in this case?

A. In a world where CMOS editors could stand with whips and chains over all the IT teams who write code for error messages for all the software packagers who supply all the websites, everything would be written consistently in Chicago style. As it is, however, CMOS editors have no such power. And quite honestly? We’re fine with that.