1976), is a criminal case in which the court held that willful ignorance satisfied the requirements of knowledge of a fact.

[1] Jewell was approached in a bar in northern Mexico near the border with the United States, and after being offered marijuana which he declined to buy, was asked if he would drive a car across the border for $100.

To be found guilty the law required that he have knowledge of marijuana being in the car.

The trial court instructed the jury that the "government can complete their burden of proof by proving... if the defendant was not actually aware... his ignorance... was solely and entirely a result of his having made a conscious purpose to and disregard the nature of that which was in the vehicle."

The appellate court wrote, "deliberate ignorance and positive knowledge are equally culpable... one 'knows' facts of which he is less than absolutely certain.