Evil is not a created substance — analogy of donut hole and shadow

A common misunderstanding is that evil is a substance or thing that had to be made. Mike (crediting "Koukl and standard reason" — likely Greg Koukl) offers two analogies: (1) a donut hole is not a thing that is made; it is the absence of donut; (2) a shadow is not a created object but simply the absence of light. Moral evil similarly is not something that needed to be created — it is the absence of or contrast to goodness, not a material or abstract object in its own right.