Symbols and Language
Nicolas,
You reject my claim that, in language, we are mapping symbols to empirical measurements.
Yet, I maintain this is effectively what we are doing, even if it may not have a structure as formal as mathematics or science.
In mathematical models, we explicitly map symbols to empirical measurements. Our brains evolved to do the same thing without using raw symbol manipulation. We can estimate distances, speeds and rates of closure. We can perceive ranges of temperature. We can detect colors and hear sounds. Let's take your example: I am seeing a blue object. Though we can distinguish two similar colors, we cannot quantify color in terms of spectra without the aid of instrumentation. However, the principle is not weakened. We are able to recognize the predominant frequencies in the color as blue. We have similar limitations with other senses. For example, I cannot estimate the a car's length to better than about six inches of precision, even when I' m looking at it.
Our brains may not naturally use symbolic algebra, but it is creating an approximate mathematical model nonetheless. It must do so in order to perceive the world. The average human brain is a microcosm of scientific research. Certainly, the average human is no scientist. Working primarily from instinct and emotion, humans are not naturally suited to rigorous science.
Here is a plausible scientific model about how our brains actually work. For each concept the brain associates with a measurement (e.g., speed, color, auditory volume) or thing (bee, car, planet), there is a region of our brain that is activated (or 'spikes') when we observe or imagine the corresponding thing. Language is an approximate association between these activations and vocalizations. Our language lacks the precision or clarity of mathematics, but it is optimized for social interaction and brevity. Voila! A scientific model of language. Okay, so I skipped a few details, but I don't doubt that we will one day create a very effective model of both thought and human language.
When this happens, there will be only science, and abstract theories about language (e.g., Wittgenstein's Tractatus) will be cast aside.
doctor(logic)
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