Jonluw said:
That's sort of what I mean though: I think all thinking, fundamentally, might be abstract. All processing of sensory input relies on the brain performing calculations independent from the world outside. I'm thinking all thougths may be abstract, no matter how primitive. Things like being able to make a connection between a certain symbol and a certain sound might just be a characteristic of minds that can perform a certain amount of calculations and draw the calculations fairly far without needing sensory input to assist the calculations along the way.
I imagine all brain calculations are abstract, but while something like a flatworm may only be able to perform a very small and short calculation originating in a sensory input; the abstract thought being nothing more complicated than "thing there, move in other direction" and existing for only a moment, we humans have brains of extraordinary calculating power, enabling us to perform a long string of calculations from a single point of sensory input, these calculations taking the form of long, stretched-out, and detailed abstract thought in our minds.
I think it might be possible to put it more concretely in that a sapient mind is a mind which has itself as the most major input.
Such a simple mind as you're describing simply takes sensory input, processes it and possibly remembers some minor things and then provides muscular output. The most important thing to such a mind is the sensory input.
When it comes to human minds though the most important thing, I believe, is the mind itself. Most actions we perform can't be directly traced back to sensory input, there's much, much more at work. There are convictions, beliefs, memories, assumptions, impressions, knowledge etc. etc. that make up a large factor in our behavior.