Four percent of people do not believe in cucumbers

The Guardian reports that

Half of British adults do not believe in evolution, with at least 22% preferring the theories of creationism or intelligent design to explain how the world came about, according to a survey.

The poll found that 25% of Britons believe Charles Darwin's theory of evolution is "definitely true", with another quarter saying it is "probably true". Half of the 2,060 people questioned were either strongly opposed to the theory or confused about it.

This is going to get me yelled at, but how do you believe or not believe in something for which there is clear, scientific evidence? Isn't that quite like not believing in fingernails or cucumbers? I have nothing against people's practice of religion, but surely it must be robust enough to stand up to scientific theory and fact.