The mysterious monolith saga just got a sweet and crunchy twist. A new structure appeared in San Francisco on Christmas morning that’s entirely made of gingerbread cookie. Let’s backtrack. On November 23rd, state officials stumbled across a shiny metal monolith in the middle of the Utah desert that looked like it was straight out of 2001: A Space Odyssey. At first, people half-seriously wondered if aliens had planted it there (as they did in the Kubrick film), but then the New York Times ran a detailed story that linked the structure to the late sculptor John McCracken, who was known for creating metal monoliths and once suggested that he’d like to plant them in remote areas for people to find years later. Within a week, tourists arrived and removed the statue, but then a nearly-...