Do We See Colors in the Same Way?
This question is not new: when I see red, how do I know that you don't see blue and are just calling it "red"? I don't think this is question is impossible to answer, even though it seems that the only way to know would be to upload your mind into someone else's brain. You'll have to allow me one assumption, though: that the brain "invented" the concept of red in order to react instinctively and quickly to danger, thus allowing increased chances of survival, procreation, and domination of whatever gene mutation allowed the concept of visually perceiving red to form. Obviously, the brain didn't invent anything, especially not intentionally. Thought Experiment Way back, two groups of people split from each other. One stayed on continent A, and one moved to B. On A, a very nutritious fruit has a lot of 300 nm light given off, and a certain predator has fur that gives off 700 nm light. On continent B, it's the other way around. Each group's b...