Final answer:
The Intelligent Design Theory argues that complex structures require an intelligent designer, but does not offer a method for how this occurs. Opponents argue that the complexity of the universe and existence of waste and inefficiency suggests against an intelligent designer.
Step-by-step explanation:
The Intelligent Design Theory argues that any complex structure must be the result of an intelligent designer but does not offer a method by which this occurs, therefore it is not a scientific theory.
The theory disputes the process of natural selection as enough to explain the complexity of living organisms, and suggests that an intelligent designer is required. However, the complexity of the universe and the existence of waste and inefficiency in nature actually provide evidence against the existence of an intelligent designer.
Opponents of intelligent design argue that instead of assuming design, we should consider whether the origin of an object could have been natural.