You are roused from a deep sleep by your spouse, elbowing you in the ribs. “What the…” you begin to mumble, groggily. “Shhh! I heard a noise downstairs,” your spouse whispers. At once, you’re wide awake, in a state of hyper-alertness, courtesy evolution and the fight-or-flight reflex it perfected. You reach for the flashlight on your nightstand, […]