The 'Chinese' Theory: For and Against

[ReneZ]

But that is not true for the Chinese script -- because it is not phonetic!  In Chinese writing, each symbol (or pair of symbols) represents directly a concept. 

It is not that simple. There is a large group of characters which consist of a radical plus a sound element.
At some point in time, for some version of the language, these sounds helped define the character set. Someone better versed in the history of the language may be able to say more about that.