Master the duty to disclose in contract negotiations.
Laidlaw v. Organ, 15 U.S. (2 Wheat.) 178 (1817)
Organ learned the War of 1812 had ended (which would cause tobacco prices to rise) but didn't disclose this to Laidlaw when purchasing tobacco at the lower wartime price. Laidlaw sued to rescind the contract, claiming Organ had a duty to disclose the material information.
Generally, there is no duty to disclose material facts in arm's length transactions. A party may take advantage of superior knowledge without disclosure, unless there is a special relationship, misrepresentation, or concealment of a defect.
Chief Justice Marshall held that Organ had no duty to disclose the news about the war's end. Silence about material information does not constitute fraud in the absence of a fiduciary relationship or affirmative misrepresentation.
This foundational case established that parties generally have no duty to disclose superior information in contract negotiations. It exemplifies caveat emptor (buyer beware) and remains influential in modern contract and securities law.