Legal Secrets: Equality and Efficiency in the Common Law

Does the seller of a house have to tell the buyer that the water is turned off twelve hours a day? Does the buyer of a great quantity of tobacco have to inform the seller that the military blockade of the local port, which had depressed tobacco sales and lowered prices, is about to end? Courts say yes in the first case, no in the second. How can we understand the difference in judgments? And what does it say about whether the psychiatrist should disclose to his patient's girlfriend that the...