When you were little, did you ever dip your hand in a bowl of orange paint and leave palm prints all over the refrigerator door? Or maybe you doodled your way through notebooks in Mrs. Klangmuth’s French class. Or maybe you prepared an overhead presentation to explain to your parents why you threw gum in your sister’s hair. Or maybe you just couldn’t accept a less-than-accurate explanation of why the sky is blue. Or maybe you’re just plain curious.