The methods and theories of traditional Chinese medicine have developed for over two thousand years.

However, other alternative theories as to what could have happened have developed.

Two different theories have developed as to the cause.

Certainly, the theories developed in the period between 1880 and 1914 have had a very important influence on twentieth-century British social democratic thought.

This theory developed into a new profession - management consulting - and the firm that would bear his name.

As modern evolutionary theory has developed, the term has been associated at times with specific ideas.

From this, different theories developed as to how mountains were built.

His theory developed out of a series of elementary computer experiments he conducted in the early 1980's.

That theory has developed concepts to compare different methods of solving a problem to one another.

But already, theories have developed as to what the investigators may find.