The human brain uses tools which help it function more effectively, such as technology devices like the iPhone and even other people, mostly for memory utilities. And these are the extensions of the mind.

David Chalmers is Distinguished Professor of Philosophy and Director of the Centre for Consciousness at the Australian National University. Chalmers is interested in the relationship between mind, brain and reality. He is best known for formulating the "hard problem" of consciousness and for his arguments against materialism. His 1996 book The Conscious Mind: In Search of a Fundamental Theory was highly successful with both popular and academic audiences. In 2010 he gave the John Locke Lectures at the University of Oxford. These will shortly be published as his book Constructing the World . He also works on language, metaphysics, and artificial intelligence.

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