Are the things we see around us really coloured, or do they only look that way because of the effects of light rays on our eyes and brains? This text examines w... » 

Are the things we see around us really coloured, or do they only look that way because of the effects of light rays on our eyes and brains? This text examines what a person would have to believe to reach the conclusion that everyone's perceptions about the colour of things are illusions. «