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ABCAC ORDER AND ADEQUACY.
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We  have seen, that order increases systems' efficiency. However, 
efficiency alone is not sufficient to determin the quality of a system.
A train may for instace move towards a collapsed bridge. If not stopped,
it will conserve its perfect order and the unique degree of freedom. 
Only this unique freedom degree will no more be determined by the rails.
It will now take the form of a parabola finishing down in the river.
In our terms the system gets a new orderer, the parabola, of the same 
value as the previous one. The efficiency of both orders is equivalent. 
Nevertheless, the passengers would probably not assign a very high 
quality to the latter system, no matter, how well ordered it may be.

Similarily, the system consisting of a bullet fired in my direction by 
a gangster, appears to me hardly desirable, in spite ot its undeniable
perfect order.
 
Order by itself is therefore not sufficient to confer high quality 
to a system. It has to be the adequate order, an order pointing towards 
a desirable goal. Let us note, that while order in itself and its 
associated efficiency is objective, its adequacy is subjective:
The train landing in the river or the bullet fired at me may appear most
desirable from the point of view of a terrorist or of a gangster.

Summary:

The quality of a system is influenced by two factors: adequacy and 
efficiency of its ordering which are determined respectively by the 
choise and by the value of an order. Order is objective. It is 
determined by the involved physical, technical and methodological 
factors i.e. by an orderer. Adequacy, on the contrary, is subjective. 
It results from the choice of an order optimising the chances to reach 
a particular, desirable goal.