When a kid, back in the sixties, my dad bought me a shortwave radio. It had three dials: a volume control, a coarse-tuning knob to locate a radio station, and a fine-tuning knob to pinpoint the best signal from such a station. Nowadays I often get the feeling I'm using the fine-tuner when I should be using the coarse-tuner. In fact, truth be told, I often feel I haven't actually switched the set on yet.