A simpler test. Imagine a ball on a desk. What color is the ball? People who are #1 respond immediately, just as if you asked them about a real object in fron

A simpler test. Imagine a ball on a desk. What color is the ball? People who are #1 respond immediately, just as if you asked them about a real object in front of them. #4/#5 will ask “what do you mean what’s the color? I can imagine it to be a certain color” - in their head the ball is just an abstract concept labelled “ball”, it doesn’t have a color by itself.