Abstract :
Since the beginning of time, man has sought knowledge to explain phenomena and new techniques to simplify his tasks. In these quests, he has ultimately dealt with four basic questions: 1) What is the problem? 2) How may the problem be solved? 3) How applicable is a given solution? and 4) Why does a solution yield a particular set of results? Technological evolution has occurred because man has been motivated to ask and resolve such questions.
