All knives open by centrifugal force if they rotate on an axis to do so (http://www.livescience.com/52488-cen...al-forces.html). The law assumes that it would be a force not actuated manually by the agent of the knife handler. However, this is in fact the case in all situations, whether the mechanism of actuation is a flick or by pulling the blade.
#funwithmetaphysics (because the failure of this language forgets the reality of causation, primary and secondary)






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