Chapter 2 of The Brain by David Eagleman focused on the psychology behind our perception of reality; he talked about the "lense" of our senses and how our experience of reality is essentialy just our brains biased interpretation. Most of what we experience is just what our brains expect to happen, and the senses either reinforce or contradict that expectation. He referenced a few great studies and cases, such as the experiences of inmates in solitary confinement or a man being gifted vision after 30 years of blindness.

The concept that our percieved reality is different from the true big picture is something I've thought about a lot throughout my life. I've read about certain flowers having ultraviolet-coloured patterns to attract certain insects that can see it, and it's made me think about what the world looks like when you include all the detail. This book reinforced my understanding that there is no true "big picture", and in fact, from an outsider's perspective, the universe exists in complete darkness - void of all light, sound or smell.

Something I was hoping Eaglemen would talk about in this Chapter was the possibility that every colour is different for each individual person. This is a theory that has been the subject of many debates between me and my friends. I believe that each person most likely doesn't interpret colours in the same way - such that if I were to live life through someone else's brain, I would see a different array of colours for the world around me (i.e. my red is their blue, or my yellow is their completely new colour) than I did before. The reason I think this is plausible is that all words you could possibly use to describe the colours you are seeing are words relative to other colours or objects - words that you learn to associate with the colour as you acquire your native language. But, I am fully open to the possibility that there is some gaping hole in this theory, which is why I was dissapointed when Eagleman didn't touch upon it.