The Existence of External Forces To determine whether a particular action was decided upon by an individual or whether the action was predetermined one must study its cause. In studying cause one finds that there are two types of causes those that are typified by natural laws, such as a dropped book falling to the ground, and those typified by the moral considerations of men. This distinction is important because it shows both that no man can control his environment contrary to the laws of natural or scientific laws, but neither are his actions completely out of his control. The first type of cause we can consider as acce