You’re sitting in an anthropology lecture, half paying attention as the professor talks about the history of games.

“The first primitive dice games appear as early as 9,000 B.C.,” he says, “though that’s mostly speculation. We don’t know how they were played, or even if the ancients had the same conception of games that we do. Later, of course, we’d see board games, puzzles, fortune-telling games that are the predecessors of the cootie catchers you might have made in school. Cards are a relatively late addition, first appearing in China around 1200 years ago. Games are so ubiquitous around the world, in fact, that some anthropologists argue that it is not intelligence or tool use, but our persistent love for games, that truly makes us human.”

None of this is new information for you, but it gives you an idea. The perfect response to the puzzle that Alex showed you yesterday.

You find them in the library an hour later and drop a piece of paper in their lap. “Made you something,” you grin.

“What is it?” they ask, narrowing their eyes.

“Why, an ambidextrous hexatetraflexagon, of course.”