You cant just take an image and randomly distort it and call it art - although many people in La Jolla where I come from do precisely that.

Our ability to perceive the world around us seems so effortless that we tend to take it for granted.

People think of art and science as being fundamentally opposed to each other, because art is about celebrating individual human creativity, and science is about discovering general principles, not about individual people. But in fact, the two have a lot in common, and the creative spirit is similar in both.

Think about what artists, novelists and poets have in common: the ability to engage in metaphorical thinking, linking seemingly unrelated ideas, such as, 'It is the east, and Juliet is the Sun.'

Indeed, the line between perceiving and hallucinating is not as crisp as we like to think. In a sense, when we look at the world, we are hallucinating all the time. One could almost regard perception as the act of choosing the one hallucination that best fits the incoming data.

Lofty questions about the mind are fascinating to ask, philosophers have been asking them for three millennia both in India where I am from and here in the West - but it is only in the brain that we can eventually hope to find the answers.

The brain abhors discrepancies.