How often during the day do you think about what is true or what is false? What does it mean for a statement to be true? Are some statements more true than others? Think about the last time someone asked you a question. When you responded, was there a clear distinction...

What do kale, coral, and potato chips (crisps) have in common? It turns out that the surfaces of these objects have an unusual type of geometry. Recently Clara and Phil were talking about such objects, in particular their surfaces. It reminded Clara of her days as a st...