A flurry of other people's disorganization: your coworkers, your boss, your clients: marks the beginning of the week. While you may be critical, you also enjoy straightening out the tangles they've made, and you're darn good at it. If you're dealing with numbers around wednesday, proceed with even more than your customary caution. A small error could have a large ripple effect. Your innate capacity for shrewd, logical thought comes into play at the end of the week, when you can turn some ordinary research into extraordinary results. Go ahead and impress 'em.