Like many leading figures in the world of management theory, Bruce Doolin Henderson, the founder of the Boston Consulting Group (and the man most responsible for the Boston matrix), was an engineer.

Many previous cosmological explanations of the world proposed, as does the theory of entropy, an ideal original state and afterwards, for man, a continually deteriorating situation.

Cooperative learning is a kind of teaching theory and tactics system full of creative ideas and actual effect which is now widely adopted by many countries in the world.