Fred. Jackson begins by giving the example of Fred, who has better colour vision that anyone else, and is able to distinguish two colours where we only see one- red- which he calls red1 and red2. Jackson argues that there is one question that we would be unable to answer, however through our scientific investigation of how Fred is able to do this- perhaps he has cones in his eyes which respond differently to different wavelengths of light within the wavelengths that would normally constitute red for us- which is the question of what it is like to see this extra colour- what it looks like. Furthermore, if we were then to imagine that somehow we were able to produce a similar power in a second person by an operation, then we would imagine that that person ad learnt something new about what it is like for Fred to see the world. However, it can’t be the case that the second person has learnt a new physical fact about Fred’s experience, as scientists had already found out all the physical facts about Fred’s experience. Therefore, the second person has learnt about something non-physical.