Originally Posted by Robert the Red
Even "white" is a perceptual construct -- so the Fair Witness in Heinlein's book is actually wrong about what she sees, even though she is trained never to be wrong. Except in very low light, our "white" receptors are off -- our retinas have 3 types color receptors and our brain visual system learns (at a very early age) to manufacture color perception from their combined signal.
did i say white? i meant blue, no green, no red. i'm pretty sure you know this & only used the house to make your point but the point of the house was not color rather to show how a fair witness wouldn't assume said alleged color extended to unseen sides of the house. now that's a house of a different color.
good explanation of constructs though, brought up all sorts of college memories from my old communication classes.