You don't know the specifics, but I can assure you that this JS developer did not know the specifics of the iOS development question at hand. It's easy to purp

You don't know the specifics, but I can assure you that this JS developer did not know the specifics of the iOS development question at hand. It's easy to purport a sense of theoretical superiority from your side of the table, and answering an unrealistic question doesn't mean that employee will deliver you real value over time. In fact, they may hold you up and waste more of your time because this "yes man" will spend extra time determining what's clearly a waste of time is in fact a waste of time.