We measure our world by the limits of our knowledge and experience. If the only tool you have is a hammer, you tend to treat everything like nails. Bigotry, bias, and prejudice are all words that describe this limited view (hammer) each of us tends to embrace and apply.

A dog does not comprehend poetry, nor does an infant calculus. The worlds of the dog and of the child are extremely limited in scope. For the dog it is predominantly genetically determined. Even if a dog would like to understand poetry, it couldn't and will never grow into it either. On the other hand, a child's view of the world can expand continually throughout life. Unfortunately, as we get into our teenage years and become certain that our knowledge encompasses just about all that could be known