3
" But it so happens that everything on this planet is, ultimately, irrational; there is not, and cannot be, any reason for the causal connexion of things, if only because our use of the word " reason" already implies the idea of causal connexion. But, even if we avoid this fundamental difficulty, Hume said that causal connexion was not merely unprovable, but unthinkable; and, in shallower waters still, one cannot assign a true reason why water should flow down hill, or sugar taste sweet in the mouth. Attempts to explain these simple matters always progress into a learned lucidity, and on further analysis retire to a remote stronghold where every thing is irrational and unthinkable.If you cut off a man's head, he dies. Why? Because it kills him. That is really the whole answer. Learned excursions into anatomy and physiology only beg the question; it does not explain why the heart is necessary to life to say that it is a vital organ. Yet that is exactly what is done, the trick that is played on every inquiring mind. Why cannot I see in the dark? Because light is necessary to sight. No confusion of that issue by talk of rods and cones, and optical centres, and foci, and lenses, and vibrations is very different to Edwin Arthwait's treatment of the long-suffering English language.Knowledge is really confined to experience. The laws of Nature are, as Kant said, the laws of our minds, and, as Huxley said, the generalization of observed facts.It is, therefore, no argument against ceremonial magic to say that it is " absurd" to try to raise a thunderstorm by beating a drum; it is not even fair to say that you have tried the experiment, found it would not work, and so perceived it to be " impossible." You might as well claim that, as you had taken paint and canvas, and not produced a Rembrandt, it was evident that the pictures attributed to his painting were really produced in quite a different way.You do not see why the skull of a parricide should help you to raise a dead man, as you do not see why the mercury in a thermometer should rise and fall, though you elaborately pretend that you do; and you could not raise a dead man by the aid of the skull of a parricide, just as you could not play the violin like Kreisler; though in the latter case you might modestly add that you thought you could learn.This is not the special pleading of a professed magician; it boils down to the advice not to judge subjects of which you are perfectly ignorant, and is to be found, stated in clearer and lovelier language, in the Essays of Thomas Henry Huxley. "
5
" To achieve accurate knowledge of others, if such a thing were possible, we could only ever arrive at it through the slow and unsure recognition of our own initial optical inaccuracies. However, such knowledge is not possible: for, while our vision of others is being adjusted, they, who are not made of mere brute matter, are also changing; we think we have managed to see them more clearly, but they shift; and when we believe we have them fully in focus, it is merely our older images of them that we have clarified, but which are themselves already out of date. "
― Marcel Proust , In the Shadow of Young Girls in Flower
6
" Oh, it’s mysterious lamplit evenings, here in the galaxy, one after the other. It’s one of those nights when I wander from window to window, looking for a sign. But I can’t see. Terror and a beauty insoluble are a ribband of blue woven into the fringes of garments of things both great and small. No culture explains, no bivouac offers real haven or rest. But it could be that we are not seeing something. Galileo thought that comets were an optical illusion. This is fertile ground: since we are certain that they’re not, we can look at what scientists are saying with fresh hope. What if there are really gleaming castellated cities hung upside-down over the desert sand? What limpid lakes and cool date palms have our caravans passed untried? Until, one by one, by the blindest of leaps, we light on the road to these places, we must stumble in darkness and hunger. "
― Annie Dillard , Pilgrim at Tinker Creek
7
" However, questions arise. Are there people who aren't naive realists, or special situations in which naive realism disappears? My theory—the self-model theory of subjectivity—predicts that as soon as a conscious representation becomes opaque (that is, as soon as we experience it as a representation), we lose naive realism. Consciousness without naive realism does exist. This happens whenever, with the help of other, second-order representations, we become aware of the construction process—of all the ambiguities and dynamical stages preceding the stable state that emerges at the end. When the window is dirty or cracked, we immediately realize that conscious perception is only an interface, and we become aware of the medium itself. We doubt that our sensory organs are working properly. We doubt the existence of whatever it is we are seeing or feeling, and we realize that the medium itself is fallible. In short, if the book in your hands lost its transparency, you would experience it as a state of your mind rather than as an element of the outside world. You would immediately doubt its independent existence. It would be more like a book-thought than a book-perception. Precisely this happens in various situations—for example, In visual hallucinations during which the patient is aware of hallucinating, or in ordinary optical illusions when we suddenly become aware that we are not in immediate contact with reality. Normally, such experiences make us think something is wrong with our eyes. If you could consciously experience earlier processing stages of the representation of the book In your hands, the image would probably become unstable and ambiguous; it would start to breathe and move slightly. Its surface would become iridescent, shining in different colors at the same time. Immediately you would ask yourself whether this could be a dream, whether there was something wrong with your eyes, whether someone had mixed a potent hallucinogen into your drink. A segment of the wall of the Ego Tunnel would have lost its transparency, and the self-constructed nature of the overall flow of experience would dawn on you. In a nonconceptual and entirely nontheoretical way, you would suddenly gain a deeper understanding of the fact that this world, at this very moment, only appears to you. "
11
" He could swear he did not look back, could not—by any optical chance, or in any prism—have seen her physically as he walked away; and yet, with dreadful distinction, he retained forever a composite picture of her standing where he left her. The picture—which penetrated him, through an eye in the back of his head, through his vitreous spinal canal, and could never be lived down, never—consisted of a selection and blend of such random images and expressions of hers that had affected him with a pang of intolerable remorse at various moments in the past. "
― Vladimir Nabokov , Ada, or Ardor: A Family Chronicle
15
" At this moment, in this place, the shifting action potential in my neurons cascade into certain arrangements, patterns, thoughts; they flow down my spine, branch into my arms, my fingers, until muscles twitch and thought is translated into motion; mechanical levers are pressed; electrons are rearranged; marks are made on paper.
At another time, in another place, light strikes the marks, reflects into a pair of high-precision optical instruments sculpted by nature after billions of years of random mutations; upside-down images are formed against two screens made up of millions of light-sensitive cells, which translate light into electrical pulses that go up the optic nerves, cross the chiasm, down the optic tracts, and into the visual cortex, where the pulses are reassembled into letters, punctuation marks, words, sentences, vehicles, tenors, thoughts.
The entire system seems fragile, preposterous, science fictional. "
― Ken Liu , The Paper Menagerie and Other Stories
16
" From his earliest years Cincinnatus, by some strange and happy chance comprehending his danger, carefully managed to conceal a certain peculiarity. He was impervious to the rays of others, and therefore produced when off his guard a bizarre impression, as of a lone dark obstacle in the world of souls transparent to one other; he learned however to feign translucence, employing a complex system of optical illusions, as it were--but he had only to forget himself, to allow a momentary lapse in self control, in the manipulation of cunningly illuminated facets and angles at which he turned his soul, and immediately there was alarm. In the midst of the excitement of a game his coevals would suddenly forsake him, as if they had sensed that his lucid gaze and the azure of his temples were but a crafty deception and that actually Cincinnatus was opaque. Sometimes, in the midst of sudden silence, the teacher, in a chagrined perplexity, would gather up all the reserves of skin around his eyes, gaze at him for a long while and finally say: " What is wrong with you, Cincinnatus?" Then Cincinnatus would take hold of himself, and, clutching his own self to his breast, would remove that self to a safe place. "
19
" Yatima found verself gazing at a red-tinged cluster of pulsing organic parts, a translucent confusion of fluids and tissue. Sections divided, dissolved, reorganised. It looked like a flesher embryo – though not quite a realist portrait. The imaging technique kept changing, revealing different structures: Yatima saw hints of delicate limbs and organs caught in slices of transmitted dark; a stark silhouette of bones in an X-ray flash; the finely branched network of the nervous system bursting into view as a filigreed shadow, shrinking from myelin to lipids to a scatter of vesicled neurotransmitters against a radio-frequency MRI chirp.
There were two bodies now. Twins? One was larger, though – sometimes much larger. The two kept changing places, twisting around each other, shrinking or growing in stroboscopic leaps while the wavelengths of the image stuttered across the spectrum.
One flesher child was turning into a creature of glass, nerves and blood vessels vitrifying into optical fibres. A sudden, startling white-light image showed living, breathing Siamese twins, impossibly transected to expose raw pink and grey muscles working side by side with shape-memory alloys and piezoelectric actuators, flesher and gleisner anatomies interpenetrating. The scene spun and morphed into a lone robot child in a flesher's womb; spun again to show a luminous map of a citizen's mind embedded in the same woman's brain; zoomed out to place her, curled, in a cocoon of optical and electronic cables. Then a swarm of nanomachines burst through her skin, and everything scattered into a cloud of grey dust.
Two flesher children walked side by side, hand in hand. Or father and son, gleisner and flesher, citizen and gleisner... Yatima gave up trying to pin them down, and let the impressions flow through ver. The figures strode calmly along a city's main street, while towers rose and crumbled around them, jungle and desert advanced and retreated.
The artwork, unbidden, sent Yatima's viewpoint wheeling around the figures. Ve saw them exchanging glances, touches, kisses – and blows, awkwardly, their right arms fused at the wrists. Making peace and melting together. The smaller lifting the larger on to vis shoulders – then the passenger's height flowing down to the bearer like an hourglass's sand. "
― Greg Egan , Diaspora
