Top Highlights

• proper treatment will cure a cold in seven days, but left to itself a cold will hang on for a week.
• To be worth much, a report based on sampling must use a representative sample, which is one from which every source of bias has been removed.
• Only when there is a substantial number of trials involved is the law of averages a useful description or prediction.
• The point is that when there are many reasonable explanations you are hardly entitled to pick one that suits your taste and insist on it. But many people do.
• When an O.K. name is cited, make sure that the authority stands behind the information, not merely somewhere alongside it.