#2

In Chapter 25, Knox gives Sophie a pair of red tinted glasses and after she puts them on she finds herself in a world which is red. Sophie knows that as long as she wears the glasses then whatever she sees will be red tinted, however this does not mean that the whole world is tinted red because if she took off the glasses then she would see the world as she normally would. If you were to wear red tinted glasses, I will use the example in the book, and walk around in a forest, you would see red trees and red bark and red everything instead of the normal green you would expect, but who's to say that the leaves of the tree are not red? some leaves are a red colour in different times of the year. If you only ever saw trees with red leaves then the world behind the red glasses would not be as different as if you had always seen green leaves.
This means that our perception can and will usually be quiet different to another persons, This is also what makes our thinking unique.

This also relates to judging things that you see before you know more about it, for example, if you saw a person with a hood over his face and a scyth in his hand you would probably be pretty scared and images of the grim reaper (or death) will come to you however if you were to shine a light onto the face of the person and you see that it is actually made of straw and the scythe he is holding is actually just a pole with and extended branch at the top and he was actually a model of a monk outside a monastery, you would think nothing more about it and just walk on. So if you did not have the light and you saw the figure would you still walk on as casually as if you had seen the 'real' side of things? i think not.