gears
lost marbles
How does it work?
DISPLACEMENT
In the process of movement to the fringe it will be 'these' who assure those still
oriented to the center remain static or displaced little.  As the pan continues to fill
in perpetuity there will arrive a scenario in which those near the outer boundaries

PHYSICS?

As it is in the material world, it is also the case in the ethereal realm of character and
behavior...Inertia and Gravity are factors of influence across all imaginable planes...
Relative to the mechanics of the process, is the Mentally Ill person Born, or Created?  

If to behold the notion of Mental Illness as a condition/affliction belonging to the Individual, is
context relevant to external factors of little importance?
tub
If a large mass/number of items (let's say marbles for example) are dumped
directly overhead into a pie-pan there will first be a strong preponderance of
flow to the center by virtue of gravity and original orientation to location.  As
the pan continues to fill there will be those marbles moving in the direction of
outer boundary through the mechanism of displacement brought by
over-crowding.  
marbles
began to flow out-and-over while those oriented to the center add layers
but remain largely unaffected relative to latitudinal occupation of space
Within the Caste System of early societies the oppressed
were restricted by the weight of those above,  In the
Lateral Caste System of the present, the oppressed are influenced by
social factors coercing advance to the outer edge...

displacement in Illness

In the lateral Caste System of the present, the oppressed are influenced by social factors coercing advance to the outer edge

If social context is  a factor of influence,do the 'lesser' or 'unafflicted'
exert unknown influences upon the
'more-afflicted'?... (thus the
'more-afflicted' becoming the 'even-more-afflicted'?)