Following the development of knowledge economies, there has been a rapid expansion of economic analysis of knowledge, both in the context of technological knowledge in particular and the decision theory in general. This paper surveys this literature by identifying the main themes and...

We are on the threshold of a truly revolutionary era of discovery--ranging from the origins of the universe to a new state of matter and microscopic machines, from a new understanding of the oceans and of the biological connections across the earth's species to the functioning of the human brain...