A well-chosen metaphor does wonders to explain concepts, to persuade and to ensure buy-in into any given matter. So says Paul Thibodeau of Oberlin College in the US, lead author of an article in Springer’s journal Psychonomic Bulletin & Review on the use of metaphors as a form of explanation. Thibodeau and his colleagues took note of how readers responded to the use of the more protective concept of “guardian” rather than the more militant word “warrior” to describe the police in President Barack Obama’s 2015 task force report. It used these contrasting metaphors to emphasize how modern-day law enforcement officials should go about building trust and ensuring greater legitimacy.