PSYB51H3 : Textbook notes for the whole class

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The allegory of the cave, written by plato compares our ordinary sense of reality that of prisoners in a cave. It emphasizes how critically our conception of reality depends on what we can learn about the world through our senses. Our sense of reality are the products of evolution. Heraclitus was a greek philosopher known for his famous statement you can never step into the same river twice. Stresses his view that everything is always changing. No two experiences can ever be identical, because experiencing the first event changes the way we experience the same event the second time. Perceptual systems are keenly sensitive to change. Perception quickly comes to ignore anything that stays the same for very long, this is adaptation. Democritus is had the radical idea that the world is made up of atoms that collide with one another.