Willful ignorance

Willful blindness (sometimes called ignorance of law,willful ignorance or contrived ignorance or Nelsonian knowledge) is a term used in law to describe a situation in which a person seeks to avoid civil or criminal liability for a wrongful act by intentionally keeping himself or herself unaware of facts that would render him or her liable. In United States v. Jewell, the court held that proof of willful ignorance satisfied the requirement of knowledge as to criminal possession and importation of drugs.

Willful blindness is a term used in law to describe a situation in which a person seeks to avoid civil or criminal liability for a wrongful act by intentionally keeping oneself unaware of facts that would render liability.

Although the term was originally—and still is—used in legal contexts, the phrase "willful ignorance" has come to mean any situation in which people intentionally turn their attention away from an ethical problem that is believed to be important by those using the phrase (for instance, because the problem is too disturbing for people to want it dominating their thoughts, or from the knowledge that solving the problem would require extensive effort).

In United States v. Jewell, the court held that proof of willful ignorance satisfied the requirement of knowledge as to criminal possession and importation of drugs. In a number of cases in the United States of America, persons transporting packages containing illegal drugs have asserted that they never asked what the contents of the packages were and so lacked the requisite intent to break the law. Such defenses have not succeeded, as courts have been quick to determine that the defendant should have known what was in the package and exercised criminal recklessness by failing to find out the package's contents. Notably, this rule has only ever been applied to independent couriers, and has never been used to hold larger services (e.g., FedEx, United Parcel Service, or the U.S. Postal Service) liable for the contents of packages they deliver.

...
Wikipedia