It's intelligent: revealing or reflecting good judgment or sound thought.
It makes you think: to determine by reflecting, to subject to the processes of logical thought.
So much of what we see, hear and even think is on the surface: the external or superficial aspect of something.
We're used to the superficial: lying on, not penetrating below, or affecting only the surface, presenting only an appearance without substance or significance.
This movie goes below the surface to find the true substance and origin of evolution, darwinism: a theory of the origin and perpetuation of new species of animals and plants that offspring of a given organism vary, that natural selection favors the survival of some of these variations over others, that new species have arisen and may continue to arise by these processes, and that widely divergent groups of plants and animals have arisen from the same ancestors.
and intelligent design :the theory that matter, the various forms of life, and the world were created by a designing intelligence.
He compares the Berlin wall to the wall that exists between these two schools of thought today. On one side is freedom. On the other. . .?
All Quotes from Webster.com