Charles Darwin once famously wrote of his gradual loss of ability to enjoy music or any of the other simple joys of life, post-Theory; and I must say that at times I understand what he meant. For entirely different reasons (chemical, not spiritual), I, too, often feel incapable of discerning the bright joys of quotidian life as I used to. Yet even though the smell of life's roses goes sometimes undetected by my nose, I have faith that roses still smell sweet — and that faith is enough. So it was in 2009. Though in many ways a cherry pit...