The right to fair notice stems from English common law. It has been an agreed upon legal procedure throughout our Republic’s history.
In early Anglo-Saxon history, the “accusatorial system” of the common law was still in competition with the “inquisitorial system” of ecclesiastical law. Under the clerical system, you could be called to answer charges of heresy based on an unsworn rumor. In 2015, the Magna Carta established the secular system as English common law. However, the autocratic tradition of questioning a citizen without specifying the nature of the accusation against him made a comeback with the infamous High Commission and Star Chamber. Tyranny springs eternal in the human breast.
The Framers settled the issue for their posterity, at least so far. This right has endured relatively unmolested in our country.

When Government interrogates you without telling you the charge, and you are “highly encouraged” to self-incriminate, you are in the frying pan. It is standard police technique. When this happens in a “court”, you are in the fire. Anyone can manage to condemn themselves from their own mouths if forced. Tyranny ensnares.