The professor was stupid.
A person with half a brain would know that Cold is just the absence of Heat or darkness is the absence of light.
Just because we haven't seen something like evolution or our brains, does not mean that we cannot study it through observation of fossils, CAT scans...
Ergo, just because we cannot explain something yet doesn't mean that we immediately assume... God did it.. Faith is just a temporary rationalization of the human brain until it can make sense of something.