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With planning or deliberation. The amount of time needed for premeditation regarding an act depends on the person and the circumstances. It must be long enough, after forming the intent to act, for the person to have been fully conscious of the intent and to have considered the act.
A design formed to commit a crime or to do some other thing before it is done.
Premeditation differs essentially from will, which constitutes the crime, because it supposes besides an actual will, a deliberation and a continued persistance which indicate more perversity. The preparation of arms or other instruments required for the execution of the crime, are indications of a premeditation, but are not absolute proof of it, as these preparations may have been intended for other purposes, and then suddenly changed to the performance of the criminal act. Murder by poisoning must of necessity be done with premeditation.