Hunches

"My rule with a hunch is that if it calls for more work, like right now, follow it. If it calls for less or something like skimping, then ignore it. If it's a case where there are sixteen leads and none more likely than any other and you might as well take them in alphabetical order, then a hunch might well be the back of your mind drawing your attention to something the front of your mind missed."

-- Jo Walton, Farthing