Ontologically the notion of *appearance* is a silly (though time-saving) useful fiction.
An observer apprehends a physical object.
All acts of noticing or paying attention
to inanimate objects, which lack the
capacity
(intention) to disclose themselves,
are observational
discoveries of the observer. The observer's
experience of the encountered object
is undergone
as one of the observer's existential
modes.
An observer can either subjectively
encounter
an object, by chance, or by habit born of
familiarity, or by seeking it out and
deliberately
confronting it. An insensate object
does
not intentionally disclose itself and
decide
to appear - it simply exists as it
is, devoid
of feeling, interest, consciousness
and animation.
A sensate object may or may not purposely
show itself or be accidentally revealed
to
others. Some living organisms may unconsciously
modify their forms (a flower opening
its
petals or turning its leaves towards
the
stimulus of the sunlight etc.) The
observer's
evaluative physical response to the
stimulative
photonic bombardment of his or her
retina
is produced by the incoming quanta
of electromagnetic
energy as it impacts the eyeball and
the
appraisal of that neurologically processed
energy into an image is engendered
by the
observing entity.
The observer's sensorium discerns and
differentiates
the incoming photonic quanta which
has been
reflected off the surface of the observed
object as it arrives (appears) and
is presented
to the eyes. The brain compares it
with templates
of previously experienced phenomena.
To make this quite clear - the act
of apprehending
or comprehending that which is deliberately
or unintentionally encountered, is
a function
of the visual and neurological apparatus
and experience of the observer whilst
he
or she distinguishes the physical characteristics
of the encountered object as arriving
(detectable)
photonic data. The abstract noun *appearance* is a reification of the experience undergone
by he who encounters and senses - not
of
that which is encountered.
*Appearance* simply means the arrival at the eyeball of
waves of the sun's electrons
which have bounced off the surface of objects
and stimulated the human visual system. The
arriving train can only appear at the railway
station if there are humans to witness such
an arrival. In most cases the perceived insensate
object is no more involved in the matter
of *appearance* than a tree being spattered with raindrops
is intentionally *engaged* in being rained upon. For the most part
inanimate objects are subjectively exposed
to such objects as raindrops or photons,
whereas many animate objects seek to *harvest* the nourishment of sunlight or rain for
purposes of survival or conatus, which is a natural tendency inherent in
a body to thrive and develop itself.
When a man or an animal deliberately reveals
itself (as from behind a curtain or a bush)
the experience of the revealer is one of
deliberately disclosing or showing itself
with the object of being seen (as a parent
animal drawing the attention of a predator
to itself to save its young etc. ) If there
were no observer or predator
there to see a self-revealing object - there
would be no (putative) *disclosure* or *appearance.
*Appearance* is a reification - a naive folk-entification
of the experience or existential modality
of he who encounters and senses some object.