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Are the ideas that result from neurons communicating via chemical reactions not physical?

The neurons communicating are physical, but the ideas and imagined images are not. The images don’t exist in the neurons, they are a result of those firings plus whatever else we use to get those images in our heads. I don’t know what neuroscientists say, I’m just going with the basic definition of “physically real”.

Write4U puts “see” in quotes because the mental image is not the physical thing.

If we don’t define it this way, I’m not sure the term “physical” has any meaning.