Also known as: practically certainty · MPC knowledge · purposeful intent
Written by attorneys · grounded in primary & secondary sources — see below
Awareness that a particular result is virtually inevitable from one's conduct. This standard marks the boundary between knowing and reckless mental states under modern criminal codes. It requires the actor to understand that the result will almost certainly follow from the chosen actions.
Elena, a night nurse, knew that administering a powerful sedative immediately after another medication would dangerously suppress breathing in frail patients like Mr. Rivera. She deliberately timed the injections to follow each other closely after he insulted her. Mr. Rivera stopped breathing and died. Elena's awareness that death was virtually certain from the timing satisfies the practically certain standard for a knowing mental state.
Erica resented her supervising partner Quinn for taking credit for her work. She lured him to an empty file room after hours, concealed a heavy marble statue nearby in advance, and struck him repeatedly in the head even after he lost consciousness. The sustained blows to a vital area showed she understood death was virtually certain to result from the attack.
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Recklessness requires only conscious disregard of a substantial and unjustifiable risk. Awareness that a result is practically certain means the actor understands the outcome is virtually inevitable, elevating the mental state to knowing under modern codes.
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No. Circumstantial evidence such as the choice of method, timing, and targeting of a known vulnerability can establish that the defendant was aware death was practically certain even without an express admission.
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Yes. Purpose requires a conscious object to cause the result while knowledge requires awareness that the result is practically certain. Evidence of deliberate planning and use of a deadly method often permits a jury to find either mental state.
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The standard defines the mental state for a result element. If death does not occur the homicide charge fails, though the same facts may support attempted murder or other offenses.
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…a specific wrongful purpose, is consciously aware of the nature of his conduct or of the result which will (or which is practically certain to) be caused ." Ill. Ann. Stat., ch. 38, par. 4-3, Committee Comments, at 256 (Smith-Hurd 1972). Thus in Muir the indictment charged that the defendant "with the intent to commit…