You can not have a river flow in one direction other wise peasants will follow it to the source.

a) One (life) within direction (inception towards death) being tempted by others to follow instead of resisting.

b) Only within one direction (inception towards death) can one (life) navigate (left/right; up/down; front/back). Why? Because one direction (motion) generates balance (momentum) for ones free will of choice to navigate within.

c) Perceivable inspires ones resistance; suggested tempts one to follow others.

d) Choosing sides implies being directed by others; being choice implies within the balance (momentum) of direction (motion).