
Few things are touted more enthusiastically in our society than "knowledge." Modern technology, which seems to rule the world, is based ultimately on sophisticated mathematics and science. Millions of people spend or borrow untold billions of dollars to gain an understanding of those things in universities. Governments spend billions more to finance medical and other scientific research, so that the knowledge acquired can be applied to improve our material lives or, at the extreme, to comb the universe in search of other worlds...