I Am a Strange Loop - Douglas R. Hofstadter [114]
Similarly, driven by its dreads and dreams, my self-symbol peers with great intensity, though with little confidence, out into the murky fog of my future existence. My vast episodic memory of my past, together with its counterpart pointing blurrily towards what is yet to come (my episodic projectory, I think I’ll call it), and further embellished by a fantastic folio of alternative versions or “subjunctive replays” of countless episodes (“if only X had happened…”; “how lucky that Y never took place…”, “wouldn’t it be great if Z were to occur…” — and why not call this my episodic subjunctory?), gives rise to the endless hall of mirrors that constitutes my “I”.
I Cannot Live without My Self
Since we perceive not particles interacting but macroscopic patterns in which certain things push other things around with a blurry causality, and since the Grand Pusher in and of our bodies is our “I”, and since our bodies push the rest of the world around, we are left with no choice but to conclude that the “I” is where the causality buck stops. The “I” seems to each of us to be the root of all our actions, all our decisions.
This is only one side of the truth, of course, since it utterly snubs the viewpoint whereby an impersonal physics of micro-entities is what makes the world go round, but it is a surprisingly reliable and totally indispensable distortion. These two properties of the naïve, non-physics viewpoint — its reliability and its indispensability — lock it ever more tightly into our belief systems as we pass from babyhood through childhood to adulthood.
I might add that the “I” of a particle physicist is no less entrenched than is the “I” of a novelist or a shoestore clerk. A profound mastery of all of physics will not in the least undo the decades of brainwashing by culture and language, not to mention the millions of years of human evolution preparing the way. The notion of “I”, since it is an incomparably efficient shorthand, is an indispensable explanatory device, rather than just an optional crutch that can be cheerily jettisoned when one grows sufficiently scientifically sophisticated.
The Slow Buildup of a Self
What would make a human brain a candidate for housing a loop of self-representation? Why would a fly brain or a mosquito brain not be just as valid a candidate? Why, for that matter, not a bacterium, an ovum, a sperm, a virus, a tomato plant, a tomato, or a pencil? The answer should be clear: a human brain is a representational system that knows no bounds in terms of the extensibility or flexibility of its categories. A mosquito brain, by contrast, is a tiny representational system that contains practically no categories at all, never mind being flexible and extensible. Very small representational systems, such as those of bacteria, ova, sperms, plants, thermostats, and so forth, do not enjoy the luxury of self-representation. And a tomato and a pencil are not representational systems at all, so for them, the story ends right there (sorry, little tomato! sorry, little pencil!).
So a human brain is a strong candidate for having the potential of rich perceptual feedback, and thus rich self-representation. But what kinds of perceptual cycles do we get involved in? We begin life with the most elementary sorts of feedback about ourselves, which stimulate us to formulate categories for our most obvious body parts, and building on this basic pedestal, we soon develop a sense for our bodies as flexible physical objects. In the meantime, as we receive rewards for various actions and punishments for others, we begin to develop a more abstract sense