A major "cognitive obstacle" to the acceptance of the theory of evolution by natural selection is that it is false. Falseness, absurdity or preposterousness of theories, such as for example the theory that the Earth is shaped like a rugby ball, constitute major congitive obstacles to the acceptance of such theories.
make suggestions about what can be done to improve acceptance of Darwinian
One way is to point out that students will get a grade of zero if they do not profess belief in Darwinism.