The eye is often described as an amazing structure that enables us to discover the world around us. Unfortunately it is a pretty poor camera and the image produced is also pretty poor. The incoming light source can be distorted by the so called inverse problem. The source of the photons and reflectance can alter the image pattern and imprint on the eye an imperfect picture. There are no filters accept the dilation of the iris to dampen these distortions. Humans only see a very small range of the light spectrum which is unusual because we are a visual creature. We are a creature of the day and we rely a lot on colour to give us the pattern cognition of which we are very good. This means we have a lot of cones near the forward looking part of the eye – the fovea. The other rods that allow us to see in low light are on the outer part of the retina and are quite sparse. Rods are more sensitive to light because they use a many to one neuronal system. Rods are black and white sensors and have been favoured by nocturnal predators and their prey. The poor quality that is cast on the retina is also only two dimensional in a three dimensional world, object shape, depth and distance can be improved by using binocular vision but the area of vision is limited. The clarity is centred on the fovea in the eye and vision blurs as we move away from it.

We use symbols like an apple or a car, these objects can both have the red property but have no other similarities. This shorthand allows life to build up the world around us in to an environment that makes sense to us. Our brain has no direct access to the external world, the closest one being sight which is channelled through brain neural tubes but still requires an intermediate optical organ.

It could be said that the more complex the brain gets, the more it divorces us from the real world. Quantum Mechanics states that we can not measure any particles/waves without observing them. This means that we only see a snapshot of what is happening, even a recording is a series of snapshots. We live in a world of probabilities and not actual fixed objects. An electron does not move around an atom nucleus in a nice circular motion but can be anywhere within an atom’s influence. Also a whole new world of possibilities has opened up with the discovery of entanglement, a can of worms that will be discussed later in the tecnical section