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What is consciousness?

PhilosophyLesson on requestFree to read

Quick answer

Consciousness is the state of being aware — of your surroundings, thoughts, and self. It is the subjective, first-person experience of what it's like to be you, and explaining how it arises from the physical brain is one of the deepest open questions in science and philosophy.

Key things to understand

  1. It covers both wakeful awareness and the inner, subjective quality of experience.
  2. The 'hard problem' asks why physical brain activity is accompanied by felt experience at all.
  3. Scientists study its 'neural correlates' — brain patterns that track conscious states.
  4. Theories range from it being a product of brain complexity to more debated ideas; none is settled.
  5. It's distinct from intelligence: a system can process information without necessarily being aware.

People also ask

What is the 'hard problem' of consciousness?
Named by philosopher David Chalmers, it's the puzzle of why and how physical processes in the brain give rise to subjective experience — the feeling of 'what it's like' — rather than just behavior.
Are animals conscious?
Many scientists think a range of animals have some form of conscious experience, especially mammals and birds, though the degree is hard to measure and still debated.
Can a machine be conscious?
Unknown. Today's AI processes information with no evidence of subjective experience; whether consciousness could ever arise in a machine is an open and contested question.