It is Impossible to Keep Up with New Knowledge

No man's model of reality is a purely personal product. While some of his images are based on firsthand observation, an increasing proportion of them today are based on messages beamed to us by the mass media and the people around us. Thus the degree of accuracy in his model to some extent reflects the general level of knowledge in society. And as experience and scientific research pump more refined and accurate knowledge into society, new concepts, new ways of thinking, supersede, contradict...

 Theory Versus Discovery

Discovery always carries an honorific connotation. It is the stamp of approval on a finding of lasting value. Many laws and theories have come and gone in the history of science, but they are not spoken of as discoveries. Kepler is said to have discovered the laws of planetary motion named after him, but no the many other 'laws' which he formulated. ... Theories are especially precarious, as this century profoundly testifies. World views can and do often change. Despite these difficulties, it...