After saving her town from a psychotic killer, Winnie Carruthers' life is less than wonderful. When she wishes she'd never been born, she finds herself in a nightmare parallel universe where without her, things could be much, much worse.

"Where does math come from? From a textbook? From rules? From deduction? From logic? Not really, Eugenia Cheng writes in Is Math Real?: it comes from curiosity, from instinctive human curiosity, "from people not being satisfied with answers and always wanting to understand more." And most importantly, she says, "it comes from questions": not from answering them, but from posing them. Nothing could seem more at odds from the way most of us were taught...